Leaks

First is it real bad leak? The u need to find out where it is coming from. Can be done by cleaning trans off and running and looking where leak is coming from. Most common leak is the 2 tran rubber cooler lines. The 2 lines made of rubber that go int the front of tans if you can turn them and they move there in need of new clamps or tightening, if you cant tell wear it is coming from, and leak is not to big, at least fill trans to proper level. Use atf+4 only dont use dextron or mercon. Start car while in park pull dip stick out and look at level if cold read cold level if hot read hot level. Keep full until you can find a good mechanic