You can browse and buy music without an account — but to save and organize songs into playlists, you'll need a free "Fan/Buyer" account tied to your email.
This is a free listener account
It's not an artist account — there's no plan, no subscription, and no fees. It just lets you keep your purchased music organized.
Want to upload and sell your own music instead? That requires a separate artist account, which you can set up from the Pricing page.