The requirements for full member rank is 100 merits and 120 activity. You already have the required activity count and 12% of the merit count. You've seen members with 300+ merits, which goes to show that it is possible to rank up on the forum if you put in the required effort.
This is a Bitcoin foum and anyone using it would need to be acquainted with how it works, with a bit of more effort you'll learn something new and be able to join discussions.