apple music not working and i have apple one

I'd contact customer support. Use the "Get Support" link at the top right of every page of these forums.

But, double check to make sure that the device you're trying to play music on is using the same Apple ID as your Apple One account.

Libby_Lou wrote:

Then you can do 1 of 2 things:

Pay for Apple Music, for complete iTunes access,

or

Go to the iTunes app, and buy the music you wish to listen to. This can be done by redeeming gift cards, or by attaching a credit card. Once you have purchased your music, you can listen to if by proceeding to the music app>library>songs, and voila!

If the OP has Apple One, they are already paying for Apple Music.

Apple One - Apple

If by ‘not working’ you mean it shows this screen when you try to play a song:

Then you can do 1 of 2 things:

Pay for Apple Music, for complete iTunes access,

or

Go to the iTunes app, and buy the music you wish to listen to. This can be done by redeeming gift cards, or by attaching a credit card. Once you have purchased your music, you can listen to if by proceeding to the music app>library>songs, and voila!

Can you explain what you mean by "not working"? What is happening when you try to play music? Are you getting any error messages? If so, what exactly to they say? What device are you using? What version of the system software is that device using?

Best of luck.