Welcome to the Apple Support Communities!
I understand you have questions about a charge for Apple Music that you have not authorized. The resources below will help you identify if this is a legitimate Apple charge or a phishing attempt, and provide you with contact information for the iTunes Store support team:
See your purchase history in the App Store or iTunes Store
If you see ‘itunes.com/bill‘ or an unfamiliar charge on your bank, credit card, or debit statement
Use this form for assistance with account and billing, code redemption, or purchase questions