@Baby89 UTest is a weird one. I got to just below gold rating within 3 months. The initial step is to do the academy courses. Then you can do a dummy cycle. That will get you to proven rating, which will get you started with invitations for paid cycles.
However, as a proven rated tester, you'll come down the pecking order from gold, silver and bronze testers. That means they get the invitations first, so you won't get a look in with cycles that have a very limited number of slots. Where you will get invites is for cycles with large numbers of testers. As you start to get issues approved, you'll steadily climb the ladder. Something to understand is that an exceptional/very valuable issue is worth far more in the rating algorithm than a 'somewhat valuable' one.
To get 'very' valuable, or 'exceptional' you need to really read the brief, and make sure that your issues target it, or money. Basically, something that will lose money for the company will get a high rating. As an example, a massive sports brand opened for testing and I realised that I couldn't check out my basket at all. I raised it, and they designed a new test site just for me, so that they could work out what was going wrong. I earned 'exceptional' for that. Another time, I saw that a fashion brand website didn't detail the discount they were giving at checkout, so you'd have to manually work out the difference between what you'd seen in the product listing and what you saw in checkout. That also give l got exceptional.
Generally, you'll get tasks for websites, game glitches, apps, etc. Sometimes it will be a general "see what you can find" and other times it will be "follow these steps and see if anything goes wrong". Occasionally you get "we think we've fixed these issues - can you check if there is a problem".
What I would say, is that I got quite anxious and paranoid about always being available for testing in case I missed something and lost my rating. I got the impression that your rating is ultra precarious, and even one mistake could see you plummet to oblivion, making it impossible to get work. It isn't true. I haven't taken part in any projects since April. I get regular invitations and when I just checked, I had 11 invitations in my box. I'm still rated bronze, despite no activity since April.