I would like to update my iPad

I note that your iPad is still running iOS 10. Without knowing the exact iPad model I can't narrow it down more but it is likely your iPad will not be able update all the way to the current iPadOS 16. The documents below describe two different ways to ensure the highest iOS/iPadOS that your iPad will support is on your iPad.

Update your iPhone, iPad, or iPod touch wirelessly. Click here --> Update your iPhone or iPad - Apple Support

Update your iPhone, iPad, or iPod touch with the Finder on a Mac computer --> Update your iPhone, iPad, or iPod touch with the Finder - Apple Support