score:2
I just did this a couple weeks ago.
As the airport map shows, there are a ton of ATMs in terminal 1 as you come out of customs, from many different banks. Each of them may charge a slightly different fee, but I had absolutely no trouble finding a working one. You have a lot of options.
The ATMs in the airport terminal are all quite official looking, built into designated areas with signs displaying the bank's name (like this), so it's unlikely one of those will be fake. It never hurts to be on the lookout for card skimmers, which is a problem in Mexico and the US, and if a particular ATM does seem suspicious, there are lots more to choose from in the airport.
There are also many currency exchange booths present. In the worst-case scenario where you're somehow unable to use an ATM at all for some reason, you could change some USD to Pesos (the rate will be bad, but it works in an emergency) to get you through a short time or take Uber into the city, which you can pay for with your phone.
Enjoy your trip!