As part of the ongoing court case between Apple and Epic, it was revealed that one of Fortnite’s first major licensed skins store bundles was a huge success. It was confirmed in court documents that Epic sold 3.3 million skins in November and December 2018 alone for its NFL partnership.
These were sold for 1,500 V-Bucks (~$15 USD), which works out to around $50 million in revenue for one set of skins. The NFL no doubt go a cut of those sales as part of its agreement with Epic, but clearly both sides benefitted from the partnership. V-Bucks can also be earned through gameplay, so it’s not a straight 1:1 for revenue.