X-4 Stormwing is an Uncommon Fortnite Loading Screen. X-4 Stormwing was available via the Battle Pass during Season 7 and could be unlocked at Tier 4.
How-to Get the X-4 Stormwing Loading Screen
X-4 Stormwing is part of Season 7. If that season is still currently in the game, you can obtain this item by purchasing and/or leveling up your Battle Pass.