I am a bounty hunter in this forum.
Dont define yourself by your objective like that. You are a member of this forum. True that you need to change your posting habits if you wish to increase your rank but calling yourself that name would give the frown to many users here.
How can I increase my rank by earning my merit points. and how much merit can make me higher rank like Sr, Hero, Legendary?
You joined the forum back in 2020. The five merits on your account till date are a few earned from signing messages and voting for Bitcointalk Community Awards.
Rest of your post history is for joining campaigns - but you did not accepted in any of those - right?
This shows that you thought merit was something you get for doing specific tasks and never took the initiative to actually learn how the forum works and how to make posts - 2years later.
Participate in the forum discussions, I am sure this has been said in many threads before this but you guys dont care to read those. Try to get involved and gradually you will earn merits, dont chase after them.