How many dogecoin exist? Is there a max cap?
There are currently 111 billion dogecoins in circulation and new creation is infinite.
Dogecoin price will upto $1 usd soon.
Even though I would really like dogecoin price go up significantly, reaching more than 100 billion in marketcap would be insanely impossible. Doge will be #1 if that ever happens.
1 dollar per doge is never gonna happen

but 1 cent per doge is possible. 1 cent per doge would mean marketcap of 1 billion and that could be very possible in the future.