91 saturn SL2 started leaking trans fluid between the bell housing and motor it is a 5 speed

You have a transmission front seal that has gone bad. The transmission will have to be removed and new seals installed.

More likely your differential pin has come loose and has carved a hole in the transmission case. This is a common Saturn problem. Shaft seals rarely fail, especially to the point of leaking tons of oil on the ground. Also, the shaft seal is up high. The hole the differential pin carves is at the bottom of the trans. You must disassemble the trans, replace the diff pin and diff gears, and weld the hole shut. It might also be wise to replace the differential carrier bearings if they are rough after cleaning, since there will be a lot of metal debris that has passed through them.