It varies wildly. Since I'm over a decade removed from having a high sex drive due to being a teenager, how horny I get has become almost 100% psychological. I'll often go three or more days not masturbating, and not even be bothered by this. Then something will make me really horny, and I'll do it twice a day for a few days in a row. Then I'll suddenly realize that it's been a week since the last time I did.
There's also a correlation between how long I take and how often I do it. If I do it really quickly when I get up in the morning, I'll want to do it again only a few hours later. But if I masturbate nonstop for several hours (watching porn, using toys, whatever) then I'll probably wait a few days before doing it again. If for no other reason, then just because my dick is sore for a day.
From age ~11 to my early 20s, I did it three times a day, every day, like fucking clockwork. When I got up in the morning, when I can home from school/college, when I went to bed. This rarely varied much at all, and it was more a variation of a compulsion than anything else; at times when I wasn't able to do this, once per day (usually before bed) was fine. However, if I didn't masturbate for more than a couple days, I'd be so fucking desperate that I could barely think.
Really, that's the main difference. When I was a teenager I didn't really need to masturbate more than the most I do now, but definitely no LESS. Now I can go without for several days and the only result is the orgasm is a lot more intense.