All the commands listed below are Slash Commands, feel free to learn more about Slash Commands and how to use them on your server by reading this article.
Brawl Stars:
/save | Save your account.
/profile | Shows your ingame profile.
/brawlers | Shows your ingame brawlers.
/club | Shows your ingame club.
/events | Shows the current and upcoming events.
/map | Shows details about a map.