Hello John Whiteside,
In the Music app on iOS the "Favorite Artists" section in Listen Now can be located near the bottom of that tab.
Add and see your favorite artists in Apple Music on iPhone, iPad, Mac, or Android - Apple Support
How to see favorite artists in Apple Music
1. Open the Apple Music app.
2. Go to Listen Now.
3. Scroll down to Favorite Artists.
If it doesn't show they're still, try adding a couple more artists as 'favorites' to help test it out. Then, manually close the app and relaunch it to give it a quick refresh and see if the section now appears in Listen Now.
Be sure to also apply the latest iOS update to the device, which is now iOS 16.6 as of today. That'll ensure it has all of the latest improvements applied: Update your iPhone or iPad - Apple Support
Cheers.