If you want to get merit on Bitcointalk, you'll need to provide helpful, insightful, and well-thought-out posts that contribute to the community. You can also get merit by helping newbies with their questions, and by being an all-around helpful member.
There is no one definitive answer to this question. Some users suggest engaging in forum activity and contributing meaningful posts, while others recommend offering services such as design or translation work in exchange for merit. Ultimately, it is up to the users who have merit to decide who to give it to, so it is important to be active and helpful in the community to increase your chances of receiving merit.
The best way to get merit on Bitcointalk is to be an active, helpful member of the community. Posting quality content, responding to other users' questions, and being generally helpful will all help you get merit. While there is no guarantee that you will get merit, being a helpful member of the community is the best way to increase your chances.