https://www.republicworld.com/sports-news/other-sports/mayweather-vs-logan-paul-fight-purse-how-much-did-floyd-mayweather-earn-from-the-fight.html
As with most boxing matches the fighters' prize money consists of an initial fee plus whatever is made from the subsequent pay-per-view TV sales. Mayweather's base salary for this match is said to be as much as $10 million and 50 % pay-per-view shares. Meanwhile, Paul will make $250,000 while earning 10% in pay-per-view revenue.
He made already $10 million in that boring fight, but doesn he earn more because of the success in PPV?
I guess the promoter did not make a lot of money from PPV buys, that's according to this latest article.
Mayweather And Logan Paul Earn Huge Purses Despite Disappointing PPV Buys
Good for them they are still paid, but bad for the promoter, and for sure they will think twice about promoting an exhibition fight as people do not support it that much anymore.