Hello @chris_1998! Welcome to the community forums.
You can revoke access to the currently linked PSN account via your account on www.spotify.com by following the link below:
You should see "Playstation Network" listed as an allowed app, with "Revoke Access" on the right side. If you revoke it, you should be able to relink your Spotify account to your current PSN account on your PS4.
Let us know if you need anything else.
Hey there you,
Yeah, you! 😁
Welcome - we're glad you joined the Spotify Community!
While you here, let's have a fun game…