3 paused on a good day. touch and go, 4 or 5 if i'm feeling particularly spicy.
most i've ever witnessed was 23 by a fella who's probably 265 pounds at 5'7" or so. guy's a brick shithouse with t-rex arms, absolutely born to bench. saw him hit 455x2 with probably the softest touch on his chest i'd ever witnessed outside of most people warming up.
dude does the weirdest things to train his bench, including what i guess could be called a variant of 21's, only 30's. usually puts 225 on the bar and does 10 reps at the bottom half, 10 at the top, then 10 full range. i tried it with 145 and my arms nearly fell off by the end.