Various, just need to find someone fucking an ATM
$50 to $500
This can go 1 of 2 ways:
The first is you come across someone at an ATM getting robbed. In this case you just need to take down the robber. After that you have the choice to bring back the wallet and get 10% of the take or just run off with the wallet.
The second is to wait for someone to get to the ATM and mug them. You can either shoot them or melee them. They will drop the money they just pulled out. Grab it and get away to avoid the incoming police.