If this is does get approved then we should add a new "bounty hunter" rank.
Jokes aside, law enforcement agency workers don't get paid anything extra for being involved in a sting or bait operation to bust a scammer or criminal, they are doing it because it the right thing to do and make the community (or whatever entity it is) a better place.
If you get some money out of it as a goodwill gesture from the victim then great but I wouldn't go as far as making it official / some sort of required payment. That being said if someone wants to seek out someone's "anti-scam services" and voluntarily pay them money (or a %) if they are successful in anti-scamming then that's fine, it just needs to be between the two people.