How do I transfer Fortnite items or cosmetics to my other account?
It is not possible to manually transfer a Fortnite item or cosmetic from one Epic account to another.
Items permanently remain on the account where they were purchased, earned, or claimed. Epic Games Support cannot process item transfer requests.
If you purchased the item recently, you may be able to return it and repurchase it on the correct account, as long as it is still available in the Item Shop and you have a Cancel Purchase or Return Ticket available. Refer to How to Cancel or Refund Fortnite Item Shop Purchases Made with V-Bucks
If your items are on the wrong account because your platform is linked to the wrong Epic Games account, you may be able to resolve this by relinking. Refer to How do I get my Fortnite, Fall Guys, or Rocket League progress to sync across all of my devices?