I was thinking the same. Usually between 5 and 7 wins it. Mbappe scored 8 last time which won it (obviously including a hat trick in the final).
This year Messi is already on 5 and Mbappe and Haaland are on 4, after only 2 games. Be interesting to see if Kane can get up there now we've got the "easier" games of the group remaining.
Just looking back at the figures actually and incredible that Gerd Muller scored 10 in 1970.