If you look at the Forbes top paid list it reports Conor took home 99 Million in 2017. Considering the Floyd fight was the only fight that year it's safe to say he made just under 100 mil for that fight.
Floyd made 285 million from that fight for another perspective.
yes from that check from the Floyd fight he had to pay the ufc, his manager, his camp, and all taxes
also that amount also counts endurmenrs as well im sure conor didn't do that burger king ad more free,