My Apple Music keeps saying there’s 2 people in my account

Please check:

If you think your Apple ID has been compromised

If you think your Apple ID has been compromised - Apple Support

Delete suspicious content from your devices

Delete suspicious content from your devices – Apple Support (UK)

Personal Safety User Guide

Personal Safety User Guide – Apple Support (UK)

See who has access to your device or accounts

See who has access to your iPhone or iPad – Apple Support (UK)

Change your Apple ID password. 

Create a strong password for your Apple ID, It is best if your password consists of eight or more characters and include upper and lowercase letters, and at least one number. You can also add extra characters and punctuation marks to make your password even stronger. 

Never provide your password, passcode, security questions, verification codes, recovery key or any other account security details to anyone else. Apple will never ask you for this information.

Then see this Apple article: What to do after you change your Apple ID or password

What to do after you change your Apple ID or password - Apple Support

Never jailbroken your iPhone.