This challenge is part of the Skye’s Adventure Challenges, the fourth agent Fortnite Chapter 2 Season 2 focuses on. You'll have to stoke a campfire, consume a foraged apple, and consume a foraged mushroom. To do so, you're going to need to know the locations of the different items.
Map
Apples will be found in the orchard north of Frenzy Farm. If you don't see any apples on the ground don't panic: by breaking trees some fruits are likely to fall. Mushrooms can be picked up at Slurpy Swamp or Weeping Wood. Finally, campfires are scattered all over the map, like at Sweaty Sands or the Cinema. Be careful: it is not enough to light it, but also to rekindle it. Once near the campfire, press your action key again to spend 30 wood and rekindle it. The fire will then be bigger and your health points will regenerate faster.
For this challenge, we advise you to land at Weeping Wood. As you can see on the map above, the place has a campfire and mushrooms right next to it. Team Rumble seems to be the best way to complete the mission.