During upgrade it said needed to delete Facebook and then will automatically reinstall. But upgraded errrored and didn't complete, Facebook is grayed out and says waiting. Tried deleting and it won't, tried shutting off phone and still says waiting.

Hey there TechChallenged12,

Thanks for reaching out to Apple Support Communities. We understand you’re having issues with the Facebook app after updating your iPhone. We’ll be happy to help with this.

This may have occurred if your iPhone needed more storage to download and install iOS. Take a look at this article for more info:

If you need more space for an update

If the app says waiting, make sure you have a good internet connection on your iPhone and then simply tap the app and see if it says Paused or starts downloading. This article has really more details:

If you can’t download or update apps on your iPhone or other Apple device

If this doesn’t help, check your iPhone storage and see if you need to free up any space. This link can help you with this:

How to check the storage on your iPhone, iPad, and iPod touch

We hope this helps.

Take care.