If you're a US based person with biometrics scheduled today, you no longer have biometrics scheduled today. Government offices are closed due to the new Juneteenth Federal Holiday.
(As we found out the hard way this morning...)
https://www.uscis.gov/about-us/uscis-office-closings
(As we found out the hard way this morning...)
https://www.uscis.gov/about-us/uscis-office-closings