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Does it have the ability to do any sort of spaced repetition? I need my knowledge stores to help me retain the things I want to retain.

I would say at this point it's not made for this. The closest thing I saw in anytype atm is this: https://gallery.any.coop/?experience=language_flashcards

Oh, but it does look like Plugins are possible then?

I'm looking into this now[1], though i'm having trouble understanding how. Maybe those are official plugins?

look at https://www.remnote.com/ . AFAIK it is the king of "spaced repetition" [1] note apps.