How To Link Fortnite Console Accounts
https://www.gamespot.com/articles/how-to-link-fortnite-console-accounts/1100-6462149/
For months, Sony had been the lone holdout when it came to allowing cross-play in Fortnite, but the company finally relented earlier this week and kicked off an "extended cross-play beta" for the hit battle royale game. If you've already made multiple Fortnite accounts in order to play on different consoles, Epic has now rolled out a tool that allows you to link all of your consoles to a single Epic Account.
First, the developer stresses that the following process will not transfer your existing purchases and progression from your account; rather, it will allow any future progression and purchases you make to carry across platforms. You will be able to combine all of your existing progression/purchases into one account when the developer releases an account merging tool this November.