Hi evquill001,
We see you're trying to update to the latest version of iPadOS 15, but are unable to do so.
The first thing we'd recommend is to check if the update has already been downloaded under Settings > General > iPad Storage. It should show an iOS 15 update if it's downloaded. Tap on it and delete it.
Then try updating again using these steps:
If you're still unable to update, you'd need to update via a Mac or PC. Links to those steps can be found in the intro section of the aforementioned article.
Take care.