Anyone who knows a glitch / way to get your crew level up fast. The number in that little crew colored box. My friends crew level went from like 2-300 to over 900 in one day. But he dont know how it did?

Lolol

mine went from 120 to 683 in one day and i had done was the change character appearance glitch few times I don't know what else I did tbh?

Edit: PS4

my crew rank was on 31 but the went down to 1

My friend just got in our crew and he's level 128

when there was crate-drop I gained like 5 levels by pick them up

How do u do it