Very simple, like a normal City RPG, when the player spawns, all his stats should be loaded, or if it is for the first time, his stats should be set.
In the event GUI, it could look like that:
OnPlayerSpawn -> Client -> VCE_modVariable -> Money = 100
The event could work on any spawn brick, or checkpoints brick.
Actually, I could do it, but each time I try to make scripts/weapons/vehicles/events they work, and fail miserably