Hello and welcome to Apple Support Communities Mony226,
Thank you for contacting us regarding Apple Music. You have come to the right place and we are happy to assist in getting this resolved for you. Let’s do a bit of troubleshooting first on the iPhone. Make sure it's up to date on the most current operating system, (Settings > General > Software Update > 14.5.1). Next, let's have you restart the device Restart your iPhone. After each of the following troubleshooting steps, you can check Apple Music and see if it resolves the issue, if not, move to the next step.
Toggle airplane mode on, then off. (Settings > Airplane Mode)
Toggle" Show Apple Music" off, then on. (Settings > Music > Show Apple Music)
Sign out of Media & Purchases, then sign back in with Apple ID & password. (Settings > tap your name > Media & Purchases)
Final Step would be to delete the Music App and redownload it.
If you have done all the steps above and still having issues, please reach out to us.
Thank you for contacting Apple Support Communities.