This challenge is part of the Midas Mission Challenges, the ultimate agent Fortnite Chapter 2 Season 2 focuses on. You'll have to catch a fish while riding in a Choppa. The first step will be to find find a fishing rod or a harpoon. They're easily found near water, on the ground or in barrels that you just have to search or break.
Helicopter Map
Choppas are scattered all over the map. Their number is limited. It will be preferable to run into one of the vehicles as soon as you get out of the bus and run away with it to find equipment elsewhere.
Please note that helicopters aren't available in Team Rumble. You'll have to complete it in Normal Mode, so you won't be able to reappear if you are eliminated.