Whoah. You don't want to run out and replace the pump without doing any other troubleshooting
You could just be throwing your money away.
Can you get the car up on ramps or jackstands to look underneath? You want to find out where the fluid is actually going... most likely, it's a fitting on one of the hoses. If you can get the car up on stands safely, with the weight off the front wheels, turn the engine on, make sure the car is in park, and turn the wheel lock-to-lock, see if the feel or sound changes at any particular point.
I'd use a turkey baster to empty the pump tank, fill it with fresh stuff, and drive the car for a bit. Then repeat. While you're doing that, see if you've lost a visible amount of fluid over that time. You'll want to check the level when the car is at roughly the same temperature.
See if the steering improves with fresh fluid before you start throwing parts at the problem.