How many dislikes can I get?

Ah ha, very clever. By asking how many downvotes you can get, you're trying to use reverse psychology to get me to upvote you, unless you thought about that in which case you want the downvotes, which means I'd be playing right into your hand. I'm more clever than that though. I'm not gonna vote either way :P.

I downvoted. I'm helping. You owe me.

most i've seen was around 2k

Here is the most downvoted post ever, if that helps. https://boards.na.leagueoflegends.com/fr/c/player-behavior-moderation/8a75KeUR-the-indefinite-banning-of-tyler1

Upvoted :)