I have 56gb taken in my 200gb icloud and it says i dont have enough storage to back up? How do I fix this issue.

Hi, corn210.

If the stored data on your device exceeds what's available in iCloud, it'll cause this to happen. If that's the case, you'd need to either increase your iCloud storage or remove storage from your device.

This article will help with identifying what is using your storage: How to check the storage on your iPhone, iPad, and iPod touch - Apple Support

Cheers.