I used to see my watch battery level from my phone. How can I do that now with iOS 14.0.1?

You can check your Apple Watch battery's charge level in several places: Swipe up on the watch face to open Control Center and see the battery percentage. On some watch faces, you can add a battery complication. On your iPhone, you can add a battery widget to show any connected Apple Watch.

Check your battery and charge your Apple Watch - Apple ...

Hi,

Please follow https://support.apple.com/en-us/HT204608

You will find the way to add the "battery" widget on your iPhone and it will display all your bluetooth devices's battery status

Use the new battery widget.