Hi Lukapower,
You may find all the information you want about titles and ranks here:
https://jmnet.one/sfs/forum/index.php?threads/how-to-earn-user-titles-and-groups.581/
As Jez10 said, promotion is automatic, but it's not instantaneous. There's generally a short delay before you get a title (the forum checks every X minutes), so don't worry at first if you're not promoted.
By the way, when asking such a question, please do it in an appropriate thread: it can be one that exists, provided it's related to your question, or you can create your own thread in the Help & Support section.