How to get trust level 3 and achieve regular

How exactly do I get trust level 3. I have been in this forum for a bit now, but how long do you have to be a member here or how many posts/replies do you have to get (or smthing else)? I’m still trust level 1 and that confuses me. Also, where would you view a user’s trust level?

This is the article of reference to understand trust levels:

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I have shown it:

(Bad photo - slow internet so can’t edit it.)
It is shown where it says Trust Level:

Yeah, but problem. My school blocks it. Oh well, I’ll find out another way.