Oh you mean like the 4 next to my name… It means the people I play with really really like playing with me. Its awarded by other players at the end of the match.
5 is the maximum and is supposedly really hard to get… In all my playing, I have only seen 2 level 5’s
p.s. were you playing Overwatch when Comp was no limits? that was a fun crazy time… now the mode is just annoying when a new hero is released. .