Q: signing in to itunes store

Hello djbernieess,

If you are having trouble signing into the iTunes Store on your MacBook Pro, follow the steps below to see if you can sign into your  Apple ID account.  You may need to reset your password.

Frequently asked questions about Apple ID - Apple Support
https://support.apple.com/en-us/HT204161

Is there a way to find my Apple ID Name if I can't remember it? 

Yes. Visit My Apple ID and click Find your Apple ID. See Finding your Apple ID if you'd like more information.

 

How do I change or recover a forgotten Apple ID Password?

If you've forgotten your Apple ID Password or want to change it, go to My Apple ID and follow the instructions. See Changing your Apple ID password if you'd like more information.

Hope that helps ...

- Judy