This Fortnite challenge requires you to head to Holly Hatchery, the former Holly Hedges.
Once you get there, you just need to gather everything you see. Be careful though, the city has been invaded by parasitic eggs and armed aliens, meaning the task could turn out to be more difficult than imagined...
Where to find resources at Holly Hatchery
This challenge pretty straightforward, since you just need to collect any type of resource -- wood, stone, metal -- to complete it.
You'll have to collect 100 materials in total, but it doesn't matter how that is split between the different types. However, we advise you to favor the trees and bushes that largely inhabit Holly Hatchery, as that will likely be the quickest solution.
As always, be mindful of enemy players in the area, and make sure you're adequately armed to defend yourself.
Alien artifacts allow you to obtain additional styles for the Kymera skin, which is unlocked as soon as you purchase the Battle Pass. Here's where you can find the alien artifacts in Season 7 Week 9.