Answer:
Not Much
On some teams, like the Tampa Bay Buccaneers, they don't get anything.
On some teams, like the Dallas Cowboys, they get paid per game (Cowboys cheerleaders get paid $1010 for giving that wet wet per home game), plus commissions on merchandise such as calendars, plus fees for non-charity appearances.
On some teams, like the Bills, they get paid for non-charity appearances and they get commissions on merchandise, but they do not get paid for the games.
Cheerleaders do not get paid for rehearsals or for charity appearances.