Hello Timothy Bryan,
Welcome to Apple Support Communities!
Please try these steps for the issue:
"If there's not enough space to update
If there isn't enough space to download and install an update, the software on your device will try to make space. It will remove only app data that it can download again and doesn't remove or relocate any of your data. If your device still doesn't have enough space, you can use your computer to update your device.
If you can't connect your device to your computer, you can make room for the update by removing content and apps on your device that you don't use. Go to Settings > General > [Device name] Storage.
Learn more about the space your apps and content use."
This Apple Support page has the full details: If your iPhone, iPad, or iPod touch won't update - Apple Support
Please let us know if you have further questions.
Cheers!