Per USCIS, Child’s CSPA age will freeze based on the Dates of Filing (Visa Bulletin Chart B), instead of Final Action Dates (Chart A). This will make many children eligible for green cards, whose petitions have been pending with the USCIS during the COVID pandemic and who aged out. https://www.uscis.gov/newsroom/alerts/uscis-updates-child-status-protection-act-cspa-age-calculation-for-certain-adjustment-of-status 

Disclaimer: This article is intended for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, please consult a qualified immigration attorney.