Want to delete iOS 14 beta profile
How to delete it
Question marked as
Remove the public beta by deleting the beta profile
Go to Settings > General, and tap Profiles & Device Management. Tap the iOS Beta Software Profile. Tap Remove Profile, then restart your device.
How to uninstall iOS beta software - Apple Support
This is not the right forum to discuss beta
When you experience an issue or something does not work as expected on beta, send your feedback directly to Apple with Feedback Assistant.