Hello and welcome to Apple Support Communities, rubytaylor!
I understand you're unable to record your screen. I'd be happy to provide information to help you troubleshoot this.
First, restart your iPhone: Restart your iPhone, iPad, or iPod touch
Test to see if the issue continues after restarting. If not, check to make sure there are no restrictions enabled to prevent you from recording your screen:
Use parental controls on your child's iPhone, iPad, and iPod touch
You can check if you have not allowed screen recording in Settings > Screen Time > Content & Privacy Restrictions > Content Restrictions > Screen Recording.
Thank you for using Apple Support Communities.
Enjoy your day!