A regulation game will have 6 innings.
there can be any amount- it goes by time limit. in all stars, there are six innings
depends where you live usually 15-25
I am in little league and so I know a little about this. I'll say on average we pitch about 60 pitches. Not that many, but a lot in just six innings.
A regulation MLB game has 9 innings. College 9 innings, High School 7 innings and Little league 6 innings.9. if they are tied, they willl go extra innings which is 10 or more if nessesary