Need Water Heater Help

Have you cleaned the burner tube and orifice in the propane valve?
Was the range burners bright blue flame?

Yep enblethen I have propane to everywhere else and the pilot light for the water heater, I did get the main burner to ignite for a second but that was only one time and couldn’t get the same result

Are you getting propane to the other appliances? Check range for good clean blue flame.
You could have a bad regulator.
Replacement

Often times a bit of wind would suck the pilot light out, on older models. Using a tooth pick stuck in one side of heater door, would help eliminate this problem. It would allow air to pass through, keeping the pilot lit.

Not what your asking, but I can't help, as to finding the replacement.

Jerry