Kiosks are located in approximately 75 airports around the globe. The full list can be found here. These kiosks are only located in the international terminals where you would normally go through customs and immigration.
GE does not itself provide you access through any other airport lines, nor does it grant you any type of airline status.
Instead, it enrolls you to be eligible for TSA PreCheck, which grants you priority security access that’s approved conditionally for each trip.