Battery percentage is not shown on iPhone 11 with iOS 16

The battery percentage display is only supported on certain devices. The iPhone 11 is not one of them.

See Show the battery percentage on your iPhone or iPad - Apple Support

mandeepsi ~ Have you set this to On?...

Settings > Battery > Battery Percentage

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Hello ~ Try adding it as a widget.

How to add and edit widgets on your iPhone - Apple Support

Can you swipe right on Lock Screen and scroll down on that page and see it?

~Katana-San~