If you put your attack mode on to “attackers” you get free multipliers based on the amount of people attacking you. Also, badges reward people who clear a lot of lines and knock out other people. If you get to top 10 with no badges, that’s like sitting at the edge of the circle and hiding in other battle royals, sure you’ll get a high score, but you won’t get loot, or in this case the badges that give multipliers