This is not the right way to get merit.
Let me help you here.
If you find a spammer, what you do is to report his posts to a moderator, the will deal with the spammer, but you get no reward, only a positive "good" report.
If you run out of "good posts", better start reading the other's good posts so you learn something new and have a wider area where you can enter discussions on matters you understand. Then merit will come your way.
The more knowledge you acquire the more merit you can get.
If you are good enough in catching SCAMers then you are very useful for the community and probably will get some merit there.
Just don't push for merit, that's the best way to get merit.