Low compression in cylinder number six

It would depend on what is causing the loss of compression. If it is due to a poorly seating valve it would be much less than if it is a damaged piston or cylinder bore.
You need to have him do either a "wet" compression test or a leak down test. In the first one you add a bit of oil to the cylinder and see if the compression returns or gets much better. The oil helps provide a seal for the rings and will raise the compression a lot if it is a ring/piston issue, however it will not cause much if any rise if the issue is a valve.
The leak down test adds air to the cylinder and you listen for leakage at the exhaust, intake manifold and dip stick/oil filler. So if it was a bad intake valve you would hear a lot of air blowing through the air filter. Exhaust valve would be at the tailpipe.

The worst case would probably be replacing the engine and then you need to decide used or rebuilt. In my area a rebuilt engine plus install labor would be close to $4,000.00 with everything included.

You could do them yourself. Most auto parts chains like advance, Autozone, O'reily have loan a tool programs. You basically buy the tool and they give you back the money when you return it.

https://www.2carpros.com/articles/how-to-test-engine-compression
The wet test is done the same way, but you squirt a bit of clean engine oil in to help the rings seal.

The leak down test is a bit different but not any more difficult. But you do need an air compressor.

https://www.youtube.com/watch?v=og9nXfXSaoY
https://www.youtube.com/watch?v=WgrfT0LFMhc

Not a bother, it is what we are here for. The two different tests check different areas for the same problem. 60 PSI is very low, and I would almost guarantee that it is valve related. That is why a shop should do three simple tests. One would be the dry test they did, it shows a baseline.

The "wet" compression test is to see if the problem is in the lower part of the engine. If the piston rings are the spot that is causing it the wet test would show much higher compression than the dry test. That would mean the engine would need to be taken out, torn down and rebuilt or replaced.

The leak down test is to discover if the problem is in one of the valves or possibly a head gasket. Say the test is done and it shows that there is a serious leak past an intake valve. To repair that would be much cheaper as the engine itself would stay in the car and the shop would remove the intake and heads, replace the bad valve or head and put it back together.
It is even possible that would not be needed as it could be as simple as a bad/broken valve spring or damaged rocker that is holding a valve open and just replacing those parts would only require removing the rocker covers.

What area of the country are you in? Perhaps there are better places to work with that will not give you a run around.

Hello DUMBMECHANIC2,

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If I was closer I would do the tests gratis, but it would be a long drive from New York. Crown Victoria's usually sell pretty easy even with a hiccup or two. At least around here.
Seems like there should be a trustworthy shop out there. I will ask on a mechanics group I am on, maybe someone knows of a better shop.