Yikes.
Well, the first thing that needs to go is any self-pity, if I'm reading any out of what you've posted. It would be nice to hear you commit to doing what it takes to pass this test.
Then you need to get some running volume in, quickly. It would be best to do two sessions a day of 1.5 miles, run-walk or however you can get them done, and time them. Report back in this thread every time. You need to be accountable. That's something we can read out of the context -- unless you're 6'11" tall or a pro bodybuilder, you're obese. And that means you haven't been accountable to yourself or your employer, and it's now resulted in a crisis.
But first things first:
1. Commit to making this goal -- passing this test.
2. Get out and run (or run/walk) 1.5 miles today. Today. Today. And report back with your time.
3. Tomorrow you will do the run again, twice. And every day until the test.
4. You will pass the test in two weeks.
Then we can work on getting your body in standards. It's not going to happen in two weeks.
Is this doable or not? I think there are openings for parking lot attendants that don't require a fitness test, so you have alternatives...