Q: can someone help me sign up to apple music?

Howdy mema0228,

Welcome to Apple Support Communities.

The information in the article below should answer your question about how to sign up for Apple Music on your Mac Pro.

Join Apple Music on your iPhone, iPad, iPod touch, Mac, or PC - Apple Support

On your Mac or PC

1. Open iTunes. Make sure that you have the latest version.
2. In the upper-left corner, click the Music icon.
3. From the top of iTunes, click For You.
4. Click Start 3-Month Free Trial.
5. Select Individual or Family Membership, then click Next.
6. If prompted, enter your Apple ID and password that you use with the iTunes Store. If you don't have an Apple ID, click Create Account.
7. You might be asked to validate your billing info, but you won't be billed until after the three-month free trial period ends. Add a valid payment method and click Join.
8. If prompted, agree to the terms and conditions.
9. Choose genres and artists that you like.

Take care.