if you already have Drift system scripts you just
addEventHandler (onPlayerQuit , .....
MS = getElementData ("source", "drift points")
setElementData ("source" ,"drift points" , MS)
addEventHandler (onPlayerWasted
the same codes
and
call(getResourceFromName("name of scoreboard resource"), "addScoreboardColumn", "drift points")
bro this is just an exemple i dont know your script codes ( i mean about drift points ...) , i just give you an idea maybe help you , any problem contact me on dc