Adding on more info, I’ll add a bunch of links to help you over time:
Of course, your trust level has to rise, which it will easily and naturally do over a short period of time.
First thing is to create an ATC Tracking Thread. This will get many users publicly on the forum to come to an airport you choose, and review your controlling skills. Be aware that sometime no one will show up.
You would then once confident want to contact a recruiter, found in this topic.
https://community.infiniteflight.com/t/infinite-flight-atc-recruiting/217147/
They’ll assign you a written test, and you can either pass, or most like first time, not make it. The first time gives you a great idea of what to expect on both tests. So in other words, don’t be suprised at all if you don’t pass the written the first time.
You’ll then have a practical test which is on the training server, where about 5 will test your Ground and Tower skills. Radar comes later by your choice..
If you feel you need more training after you’ve contacted a recruiter, i.e in the training process, you can request for ATC Training. This gives you a much more in depth, more highly skilled training session.
If you make it, great! If not, then there’s always another try. When I was IFATC I didn’t, ake it first try, and had to wait a whole period until I could take the test again. I passed first time on the comeback though 
Also apologies for repeating multiple things, some were here before typing, and some wasn’t. Just thought I’d bundle it up with some info.