Override PlayerState.OnRep_Score in bp?

I was setting up scoring in blueprint and found that PlayerState has a “Score” field built-in (among others), do I have no way to leverage its RepNotify callback in blueprint? It isn’t in the list of overrides and the PlayerState implementation is a no-op.

This goes for other fields as well. I could obviously just use a different name to workaround, but score was a pretty good one…

/** Player's current score. */
UPROPERTY(replicatedUsing=OnRep_Score, BlueprintReadOnly, Category=PlayerState)
float Score;

Same question here.
I see a built in score in player state, but no bp nodes to change or add something to the score. Can only read the score from BPs. Is that only C++ usage or how can I use built in player state score in BPs?