https://www.gamespot.com/articles/fortnite-secret-battle-star-challenge-week-6-free-/1100-6461208/

We're another week into Season 5 of Fortnite, and with it comes a new set of challenges for players to complete. As before, finishing all of the objectives in a given week will check off one of Season 5's Road Trip challenges, which in turn will reward you with a special loading screen that points to the location of a secret Battle Star hidden somewhere around the island.

Epic has released a long list of challenges in Season 5 thus far, and if you've managed to complete six full weeks' worth of them, you'll unlock the loading screen pictured below. This one depicts a group of characters gathered around a giant projection screen at a drive-in theater watching a movie together.