How can I show battery percentage with picture of battery on my IPhone 13?

To view Battery Percentage on any phone with the Face ID "notch" at the top of the screen open the Control Center by dragging down from the battery icon, or add a battery widget to your Home screen. If you examine the status bar at the top of the screen you will observe that there is no room to put the battery percentage.

See→Use widgets on your iPhone and iPod Touch