Hi manayer240,
Welcome to the Apple Community, where some of us do our best to help each other.
Wonder if you tried Restart your iPhone
and enter your passcode. Then try using Face ID again.
Or see if something else from this Apple ID support article may help:
If Face ID isn't working on your iPhone or iPad Pro
https://support.apple.com/en-us/HT208114
OR
What to do:
If an alert says Face ID has been disabled on your iPhone or iPad Pro
https://support.apple.com/en-us/HT208186
Else:
There is a "Get support" link to Apple at top right on this discussion page.
Or
Apple phone numbers around the world
Contact Apple for support and service:
https://support.apple.com/en-us/HT201232
Hope this helps :-)