With the arrival of Season 2 of Fortnite Chapter 2, a series of challenges featuring Deadpool is available. One of you will ask to find Deadpool's milk carton. The Marvel comics superhero is honored in Fortnite through a series of challenges, which will allow you, at the end, to recover an outfit of Dead Pool. To do this, you will obviously have to complete several challenges, including one asking you to find your milk carton.
Then it shouldn't take you long to find this milk carton, since it is rather visible. It is near the letter, above the urinal. Once you click on it, the challenge will be validated.