I can search google for "fda 2021 Vaccine Approval Documents release" I get the impression they are not available but was able to find them after a few clicks on the first page on duck duck go
https://duckduckgo.com/?t=lm&q=fda+2021+Vaccine+Approval+Doc...
https://yournews.com/2021/12/05/2261844/first-batch-of-foia-...