FYI, PFF has been leaned upon a lot, recently, as a measure of a player but
it isn't perfect and isn't necessarily universally accepted as the end all be all evaluation of players.
You can check this guy and some of the tweets that are connected to threads he's been involved in to see some of the weaknesses
https://twitter.com/BigDuke50/status/1615681547582988289
https://twitter.com/BigDuke50/status/1615693469116153856
Just take these scores (which are done without exact knowledge of the play call, scheme, etc) with a grain of salt. Also, if an OL pass blocking score is cited, you also should look at their Run Blocking core for more context on their overall value.