This challenge is part of the Rippley vs Sludge Overtime Mission, which ends Chapter 2 Season 1 of Fortnite. It'll require you to destroy a total of 10 SLURP containers — these can be barrels, truks or silos. To validate this challenge in a short period of time, only one location is worth mentioning here: Slurpy Swamp.
The factory makes the SLURP in question, and it makes sense to find it absolutely everywhere here. The location may be highly contested in the week following the release of this challenge, but that's where you should ideally go. To validate the challenge quickly, focus on destroying the small barrels, which require only two blows of your pickaxe to split.
We recommend the Team Rumble mode to achieve this challenge, especially during the week following its release. It'll reduce your chances of running into warring enemies as soon as you land.