Yellow Jacket Fortnite Bundle Purchase Question

Hello! I bought the yellow jacket fortnite bundle in the microsoft store shop with microsoft rewards but the problem is that I don't have an xbox. I play on ps4 and I know I bought the bundle because I checked my email. It also said that i owned it in
the microsoft store. I don't know how to link my microsoft account with my epic games account for fortnite. After that, I don't know how to make my epic games account receive the bundle. If anyone can help, thank you.

:)