I've received an email that 'website builder' is expiring today — when this expires today, will I lose the right to my domain? It wasn't created in website builder, and I'm not using GoDaddy hosting, but I'm not seeing the domain name in my products list, which leads me to worry that it's tied to this and will be made available or something.
Typically the domain name registration is going to be its own and the website builder expiring should not impact your ability to keep the domain.
I would suggest calling support to get the domain renewed or check your expiration date here.
the above website is a kind of lookup that helps you get registration info about a domain name.