I have been on forums with those ‘social score’ systems, and in every case it was disabled because of abuse, as it became a popularity contest.
(ie. fake accounts to upvote ones and down vote others, or a group of people deliberately ganging up on someone’s score, etc.)
Just by interacting (and the forums are meant so we can interact), you will know those you “respect” and are helpful from those whose opinion you do not.
IMO, we don’t need to see the total “LIKES” you have, or how many ‘BOOOs” you have.
I try to read each post on the merits of that post. I might agree with it, I might not. We are here to share opinions, to have discussions. Not to win a popularity contest.