https://www.cnet.com/news/fortnite-season-5-week-6-challenges-and-how-to-complete-them/

Every week Epic Games releases new challenges to complete in Fortnite: Battle Royale to boost your experience points. Those experience points will level up your all-important Battle Pass. The more you level up through the Battle Pass' tiered reward system, the more items and gear you'll unlock, including new emotes, dance moves, gliders and more. Some of these challenges can be quite a bit more difficult than just grabbing chests at named locations, so I've put together a guide for getting through them as fast as possible. 

If you're still not finished with last week's challenges, read my guide here.