Unable to link Apple ID to Apple Music

Whenever I attempt to sign into any of my apple IDs for use with apple music, I get told they "haven't been used with the iTunes store" and get brought through a setup that has me verify my payment and billing information. Upon completing this form, however, I get a null error with the message "For assistance, contact iTunes support at www.apple.com/support/itunes/ww," and this has also been occurring when I attempted to make a new apple ID fearing something was up with my previous one.

Before you instruct me on how to fix this with an iPhone or other apple device, I haven't owned an apple product since the 4th generation of iPhones. I just want to use apple music because I dislike spotify.