So this guy says that he figured out how the user of the month works, and i need confirmation
That is correct, that’s from discourse/app/jobs/scheduled/grant_new_user_of_the_month_badges.rb at main · discourse/discourse · GitHub
Well, everything you need to know is in the SQL query in the file that @awesomerobot linked to.
There’s even a comment explaining how it works
Find recent accounts and come up with a score based on how many likes they received, based on how much they posted and how old the accounts of the people who liked them are.