Scan enemies with a Falcon Scout and collect their schematicsis a seasonal challenge currently live in Fortnite.
They generally spawn at named locations.
The Citadel, Shattered Slabs, and Faulty Splits are particularly food places to check for Oathbound Chests.
Another way to get one is to get it from another player.
From there, you’re essentially controlling a drone.
Scan enemies by pressing the shoot button while the drone is out will trigger the scan function.
Do this when an enemy is around, and you will mark them.
If the right quest is active,the enemy will drop a schematic.
You’ll get 20k xp upon completion and progress towards your Oathbound quests.
The only way to fix this is to kickstart your game.