Fortnite skin transfer?

I have the problem that I had a card with a really cool skin on it and redeemed it in my account but now I have a new account and would like to transfer this cool skin from the card to the new account. I still know the data from both accounts but do not know how I can get the skin on my hauptacc from the old acc. The card has now expired

I don't think you can transfer that anymore. It used to be earlier.