want to see battery health on watch

If you wanted to just see how much charge is left on your watch, Idris Seabright told you how.

On some watch faces, such as the Modular face which I use, you can put the charge complication on the watch face and it is always available when you glance at your watch.

If by life, you want to see the health of your watch's battery, you open the Settings app on the watch. Swipe down to Battery and tap, then swipe down and tap Battery Health. Swipe down and you will find the maximum charge that your watch's battery can now hold. The lower the number, the less healthy your battery is.

M1 Mac mini, macOS 13.5.2;  Watch, series 7 GPS/cellular, watchOS 10; iPad Pro 2nd Gen, iPadOS 17; iPhone 12 Pro, iOS 17; TV 4th Gen, tvOS 17; HomePods, audioOS 17 and Airport Express w/ Airplay 2

The Control Center is no longer activated by swiping up. It is now activated by pressing the side button.

See the 'Remove Control Center buttons' section in:

Use Control Center on Apple Watch - Apple Support

The first (and simplest) thing to try if something isn’t working right is to restart your Apple Watch and its paired iPhone. If necessary (device not responding), try a forced restart. Both methods can be found here:

How to restart your Apple Watch - Apple Support

Restart your iPhone - Apple Support

If that doesn't help, the next steps would be to unpair and pair your watch again and restore from the backup just created. This should result in no loss of data. It deletes all temp and corrupted files and re-indexes the file system.

Unpair and erase your Apple Watch - Apple Support

Set up your Apple Watch - Apple Support