My state requires a front license plate but I don't see anywhere to mount it on the front of my 85 SS. How do I go about mounting it?

 

the 83-88 SS had a bracket that screwed into the nose to mount front plates on.
Right here is the correct bracket you would need if you wanted original GM bracket
FRONT LICENSE PLATE BRACKET GM 78 -87 CHOO CHOO 83 - 88 MONTE CARLO SS GM1420 | eBay

if you look close at the nose you should see the small dimples there the screws will go.