I wanted to play Fortnite for the first time and downloaded it on Epic games, but what is this code?

I wanted to play Fortnite for the first time and downloaded it on Epic games, but what is this code? And what should I do now?

I already tried to enter my Epic-games password but it doesn't work.

That is the registration, not the registration

So am I supposed to enter some new password there?

You now have to set a password.

You have to enter your email address and create a password, then you will receive a code on your email and can confirm.