Hello.
Thank you for using Apple Support Communities. It sounds like you're experiencing issues when attempting to search for content in Apple Music. Specifically when using Apple Music with your MacBook Pro. If this is the case, we'd like to look into this with you.
Let's try quitting the Music app and restarting your MacBook Pro to see if that helps. Just in case, the following resources can help you. Please check out these links:
How to force an app to quit on your Mac
Log out, sleep, restart, or shut down your Mac
Additionally, if you have any pending updates available for your MacBook Pro, you might want to install those updates. Keeping your device fully updated can help resolve various issues you might experience.
Back up your Mac with Time Machine
Keep your Mac up to date
We hope this information is useful. Kind regards.