I want to unlock Crow, and foto that, I need to get 5000 ppints grom sector security but its Justin won't appear im 5d's world. I don't kniw what to do anymore
He's one of the random NPCs in the 5Ds world. There's no guarantee when he will pop up.
Just check the NPCs in the 5Ds world every once in a while, and try to check that world first before you start dueling any other NPC in the other worlds.