How do I get my battery widget back on my front screen

Hello Blackninja54,

This article shows you how to add a Batteries widget on your iPhone:

Show the iPhone battery percentage - Apple Support

Add a Batteries widget to your Home Screen

1. Touch and hold the Home Screen background until the apps begin to jiggle.

2. Tap  at the top of the screen, then scroll down and tap Batteries.

3. Swipe left and right through the widgets to view the size options.

4. The different sizes display different information.

5. When you see the size you want, tap Add Widget, then tap Done.

See Add widgets on iPhone.

You can also arrange the widgets by following the steps in this article:

Move apps and widgets on the Home Screen on iPhone - Apple Support

Best Regards.