Yep, that's absolutely a BAD case of scaly-face mites, and it has to have been there for a while to get that bad.
The only way to help your bird is to get him to an Avian Vet, or any vet if you don't have access to a Certified Avian Vet, as without proper prescription medication, this will keep getting worse and worse, and will take over his beak and face.
Scaly-face mites can quickly cause permanent beak and facial deformities, so it's vital that you get your bird to a vet immediately. It's not too difficult to treat, and any vet can consult with an avian vet over the phone on what medications to prescribe to treat it. Right now your bird has a pretty bad case, but it's not yet taken over his beak or cause deformity, so now is the time you must get him to a vet before it happens. if you Google this condition you'll see the horror that these things cause...
ALSO, IN ADDITION TO IMMEDIATE VET CARE AND PRESCRIPTION MEDS, YOU ABSOLUTELY MUST KEEP ANY AND ALL OTHER BIRDS IN A DIFFERENT ROOM THAN THIS BIRD, AND THIS BIRD'S CAGE AND EVERYTHING INSIDE IT, ON IT, TOUCHING IT, NEEDS TO BE SOAKED IN A MIX OF BOILING HOT WATER AND BLEACH, THEN RINSED AND DRIED. THEN YOU'LL HAVE TO DO THIS AGAIN ONCE YOUR BIRD IS PUT ON THE PRESCRIPTION MEDICATION, AND THEN AGAIN AFTER HE'S DONE WITH IT, AS THE MITES WILL KEEP REINFESTING HIM OTHERWISE!