How hunters help to launching any product? How can I find hunter?

They help to varying degrees, some are more hands on, some are more hands off. They typically have followings invested in what they promote. Look up products you like, see who hunted it, contact them

You can get a list of hunters from this website: https://upvote-bell.com/leaderboard Go through their profile and see who is right for you. Here are some tips on how to choose the right hunter? 1. Is he/she popular in your domain/niche 2. Is he/she willing to promote your launch with their audience or not? If you get yes to both of the questions, you can bring authority and traffic to your launch.