I was billed for apple music and I didnt order it. I dont know what ir is, i dont use it. Please refund this charge

This is primarily a user-to-user support forum; other Apple users like you. We don't have access to information about charges to your account. See each of the steps in the following instructions. They include information on contacting Apple Support if the other steps don't help: If you see 'apple.com/bill' on your billing statement - Apple Support

If it is a subscription, also see: How to cancel a subscription from Apple - Apple Support

and once you have identified what the charge is, the following may also help: Request a refund for apps or content that you bought from Apple - Apple Support