Will my ipod touch still work without an apple music subscription

Yes, read this

Manage your Apple Music subscription - Apple Support

If you cancel Apple Music, you'll lose access to the Apple Music catalog, any music that you added to your Library, and the features of Apple Music when your current subscription period ends.

That said, any music on your device, say you ripped a CD or purchased stuff from iTunes outside of Apple Music, should be fine.

Sure. Mine works just fine and I’ve never had an Apple Music sub.

Now stuff you’ve downloaded via that service may not work but music independent of Apple Music will be just fine.