What if my space is full what can I do

Ha! Too funny, it's usually the other way around as I find other great minds getting their replies in before I can. I think it comes down to how much coffee/tea is consumed prior to responding. I might have had one more cup before you. ;)

How to free up space on your iPhone (YouTube) - Apple Support

The only way you can gain more space is to delete photos, messages, apps., etc.. Be sure to save important photos and data to your computer. This video should help...

Great minds think alike! Only I am slower...