I need to run 240volts to my garage. I'm using a 4 wire 2 black one green and black with white. My ? Where do I hook up the green and black with white at my house and in my garage's box

Normally a 4 wire cable will have, Black /Red (hots) White (Neutral, can also be a black with three white stripes) and Ground (Green)

Do you need 120 /240 Volts?

Also since you did not tell us what amperage you need for this feeder, we have no way to determine whether you have the correct gauge cable.

And lastly, you did not give us any information on what the wires are connecting to so it is difficult to guess the correct connections would be.

Photos of panels or connections at both ends of the cable will help us help you determine how to connect the wiring.