How do I delete my app which are meant to be updating but now aren't working?

Hi there, amymullen31!
Thanks for reaching out to the Apple Support Communities! It sounds like you have an issue with updating an app and now want to remove it and I am happy to help out! It is not recommended that you delete the app, as you might lose content you have associated with it, so I suggest following the steps in this article If you can’t download or update apps, or if apps get stuck. This will give you additional steps to try since you have tried aside from restarting the device, along with a section to Get more help if you continue to have issues updating.
Cheers!