Fortnite's Chapter 7 mini season, titled "Treasure Hunters," has added map fragments as a seasonal collectible. The fragments are being added periodically during the season, and players who find all six will receive a special reward: the "X Marks the Zero Point Sliver" loading screen. The full set will arrive through updates over the course of the mini season.
So far, only the first map fragment is available. It was added on Nov. 1 and is located at The $.$. Rocky. As players approach the ship at that location, a diamond-shaped marker with an exclamation point should appear on screen to guide them. The fragment is sitting on the floor inside the ship, on the lowest deck at the ship's tip.
If finding the stairs to that area proves difficult, players can break through the ship's exterior walls to get inside. According to the original report, more map fragments will be added to the game as the season continues, and the guide will be updated when they appear.
The remaining fragments will be added periodically, with all six required to unlock the loading screen reward.
Sources: Polygon.