Make sure you have the G-Loot Tracker installed and running on your PC. See if everthing is working by running the G-Loot app on your PC, then start your game.
The G-Loot icon should appear in your game with a green dot. This means everything is up and running to track your Mission progress.
To join the leaderboard, you need to complete a certain number of matches depending on the rules of the Brawl you want to compete in.
When you have played the minimum amount of matches, your Brawl points will be added to the leaderboard.
You can always play more matches as long as you have Tokens. Only your best scores will count.
To play in the Brawl you need Tokens.
Each match costs a certain number of Tokens. When you have spent a Token and activated a Brawl match, your next game match in the correct game mode will count towards the Brawl.