I am buying a 97 Grand Cherokee from a relitive . She had a leaking seal on front differintial and ran it dry . It started making alot of noise ,so she parked it . Gears got chewed up and the teeth are probably missing . My question is ---- If I fill it back up with fluid and remove the front drive shaft to prevent the pinion from turning , would I be able to drive the 65 miles to get it home ?

No!!!!!! Even though you remove the drive line the axle shafts are not able to disconnect from the front wheels. This means that every time your wheels turn the axle shaft turns and the ring and pinion and spider gears are turning in the front housing. If you tried this more than likely if not already the bearings may spin in the housing and destroy the housing that holds the third member gears. It will be a very costly item to replace the housing and gears. Rent a tow dolly and place the front wheels in the carrier or use a flatbed tow truck. Either of these items will cost you less money than destroying the housing.