In fantasy football (draftkings), the acronym FPPs means Frequent Player Points. You earn Frequent Player Points (FPPs) by playing in paid contests on DraftKings.com
Frequent Player Points (FPPs) are points you earn upon the start of every paid contest you enter on DraftKings.com, whether you win or lose. FPPs awarded vary per contest type (displayed on the Draft page) and are not earned for playing in FREE ENTRY games. The more contests you join and money you spend, the more FPPs you earn.