No access to my SE 2020 please help

If you forgot your passcode: If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

See this support article:--> If Touch ID isn't working on your iPhone or iPad – Apple Support

If you get no help, contact Apple Support using this link:--> Get Support

regards

Giulio

Still applies. If its not accepting the passcode, you'll need to restore it to remove the passcode and set it up again.