https://www.gamespot.com/articles/pubg-adding-fortnite-like-event-pass-on-pc-this-we/1100-6459915/

A new patch is around the corner for the PC version of PlayerUnknown's Battlegrounds. Coinciding with the update, developer PUBG Corp. is introducing a new type of progression system called the Event Pass, which gives players a new avenue for earning items in the game.

Much like the Battle Pass offered each season in Fortnite, the Event Pass allows players to earn rewards while playing PUBG. Event Pass holders will have a variety of daily, weekly, and map-specific missions to undertake; completing these challenges will level the pass up and in turn unlock exclusive rewards.