You must share that, I'm sure his parent will be able to recover the asset. But I guess it wouldn't be a good idea to share with another of your friends as you know whoever have the private key, seed key, are the owner of the funds. Hence, it has risk sharing with some other people than his parent.
If you share with his parent, ask them not to do some silly mistake which may have to pay off later.

You ask and do something "call" is a good idea.

My suggestion;
1. If you can, you should meet parents, your friends who died, to tell and teach their parents, how to operate a Bitcoin wallet and tokens that are stored by your friends, which are gone.
2. You tell one of your other friends (alive), to meet a deceased parent, to help them operate a Bitcoin wallet.

I just hope for your friend who is gone, Bitcoin password exchange he uses.
OP: Yes, that's a good step so far, you did it.

It is not a bad idea if you tell his parents. Depending on your level of closeness you have with your late friend, you may need to tell any of his parent that you know will be ready to listen to you and do not see you as someone intending to scam them because they do not know what bitcoin is. You need to enlighten them and tell them what bitcoin is and also provide them some of the proofs you have that makes you believe your late Friend has bitcoin in his wallet. I wish you best of luck. Do not forget to keep us updated.

First of all, my deepest condolences for your loss and for the bereaved family. Now sir, if by any chance the deceased really had quite a good amount of crypto currencies when he was still alive, then there really is a great chance that he has an untouched wallet with bitcoins or other coins somewhere in his smartphones, pc or maybe a hardwallet for those coins since he died. If so, then the family of your deceased friend has the right to know about this and decide whatever they wanna do with those coins; whether they wanna get their hands on those coins for their own purposes or keep it untouched the way it is as respect for the deceased. Either way, you should contact the parents together with your other friend near them so he can help the parents in understanding about the worth of those coins.

On a side note, it is always refreshing to see people like you who value enough your friends that you also care about their parents. And for that you deserve a merit.

It will be worthless if there's no one will be able to access those wallet or wallets.

Calling his realtives and discuss about those assets that your friend have is very important, it will
be use for his funeral and also be a good help for his family.

It's a duty call for you being a good friend, for sure you won't like to waste those assets that your friend
have, it's best to inform his parents about it.

My deep condolences and I'm sorry for the loss of your friend. Earlier, I had a thread of mine about inheriting Bitcoin to my family and loved ones in case something happens to me whether by accident, health deterioration or any circumstance.

I would make sure that my family would have access to my assets by saving it on my notebook and keep it inside a box (in case there's a fire or so in order not to burn down my notes). I can also save it on a USB or external hard drive with all keystore files, passwords, private keys, seed phrases and other stuff.

My family is already aware that I do Bitcoin and cryptocurrencies for more than 2 years. I would think of putting the notebook in a fireproof box with a message saying "Open this box when I die anytime. This is my inheritance to the entire family.", and also the USB with all the details in case they do not want to write the password or private key manually. I will also leave a fingerprint of mine in a cropped plastic cover because some Bitcoin apps of mine has 2FA and needs access to my phone with fingerprint, or I can leave a passcode as well.

You can tell your friend's parents about it like if he has his own room, they would look for some piece of paper, notebook or so with his private keys, seed phrases, etc.

Give them first a time to mourn. Even they don't have ideas on what will you supposedly told them, in a conditioned and relaxed mind, they will learn how to do it. There might be some close friends to them who can help and knows this bitcoin thing.

Does your friend living close to them know this bitcoin stuff? If yes, then good. Tell the family that someone is willing to help them. If no, then let your friend not be involved here.

But remember, when the time comes now that you need to tell them about bitcoin, just assist them "if they told you to do so". Don't say right away that you will help them access it.

If he's got a crap load of Bitcoin sitting on his computer, then it's wise to tell his parents before they end up selling his computer and the rest of his belongings.

Since his parents are almost certainly his next of kin, then they'll be the ones to inherit the funds.

Although it might seem insensitive to do it straight away, you should at least let them know they shouldn't sell the computer until after this check has been done. If they don't know how to do it, they could just install Teamviewer on the PC and you can do it for them remotely.

Hopefully his seed phrase is hidden somewhere easily accessible.

First of all, condolence to you bud and rest in peace to him.

You should tell his parents that he/she has bitcoins stored in his wallet 'cause it might help their family. I don't find any problem with it telling them since Bitcoin isn't a bad thing. If they ask about it, you'll be the one who should be responsible to answer all of those questions since you're the one who will tell about it. I hope you find the keys to his wallet, good luck mate.