Being able to read both bass and treble clef is critical in AP Music Theory, and a general understanding of other clefs (such as Alto clef) is useful too. Please review the resources from musictheory.net below and complete a progress check using the second link.
Review the Lesson on the Music Staff, Clefs and Ledger Lines from musictheory.net
Complete the Treble and Bass Clef ID worksheet
If you would like more practice with reading clefs, here are some resources:
Note Identification on musictheory.net (Customizable in the settings)