hey guys. I would like to know if there are any competitions where you can win a license?)

Here's a survey which allowed you to win a voucher for license upgrade but it has already expired, I'm sure you'll be able to find something similar in the future if you look around though.
https://www.lfs.net/forum/thread/94593-NDR-2020-LFS-Survey-%28%2B-Prize-Draw%29

You can also take a look around this forum - https://www.lfs.net/forum/22-Leagues-%26-Events