If Norris wins every remaining race and takes at least 7 out of 9 fastest laps, he wins the WDC even if Max gets second every race.
Max is still the favourite, but it's close enough that we can maintain a level of tension and excitement for the races at least - one DNF for Max and everything changes.
McLaren's only 30 points behind. 9 more races to go. Monza's next, after which there are two street races at Baku and Singapore which favor Perez so he might put up a good result there.
On the driver side, Norris is 70 points behind. He would have to win every remaining race with the fastest lap to win WDC assuming Verstappen's behind him on P2, or hope he does lower than that or DNFs a few times.