SCORE90 is a RQ-4 Global Hawk high altitude long endurance recon drone.
Callsign suggests it is being operated by VX-20 out of NAS Patuxent River, this is an air test and evaluation unit.
Most likely testing some modifications or upgrades.
Aircraft has high resolution radar, infrared electro optical sensors and other sensors.
At 50,000 ft it can cover a very wide area.
Anything under or either side of it's flightpath would be surveilled located identified and classified.