https://www.pcgamer.com/fortnite-hunting-party-hidden-battle-pass-star-week-1-loading-screen/

Fortnite Season 6 continues the tradition of hiding Battle Pass stars inside of unlockable loading screens, allowing players further ways to rank up their unlockable tiers. This season they're tied to the Hunting Party challenges and we've already figured out where to find the first set of hidden battle stars. 

Finishing all seven challenges for the first week will reward you with the loading screen pictured above, featuring the new Calamity skin on her llama farm. Cute, right? But if you look closer, you can see this week's Battle Star in plain sight.