Hello and welcome to JustAnswer!
There are a couple possibilities for your problem.
I assume it feels as if it's going into park correctly? If it isn't going fully into park then it will prevent you from turning the key to the off position.
If it's fully going into park then it is going to be an interlock issue. If you have a column shifter then there is a mechanical link between the shifter and lock cylinder area that prevents you from turning the key off if it isn't in park. The cable may be damaged or out of adjustment, or the mechanism itslf in the column may be sticking.
If you have a floor shifter the interlock is controlled electronically. There is a park position switch in the shifter that sends a signal when you are in park and then an electronic solenoid in the column controls whether or not the key can be turned off. A failure of the switch in the shifter, a wiring issue or the interlock solenoid in the column could be the issue.
The car is in park right now in my garage. The key is still in the ignition in the on position (facing forward). I can not turn the key back to cut it of in the off position. I wiggled n jiggled it but it will not release that key.
Ok. What is an interlock problem? Do u mean the ignition switch? Or the key n tumbler?
Ok. What is an interlock problem? Do u mean the ignition switch? Or the key n tumbler? Also, I can still drive it and start it. I can start it from the square box from under the steering wheel. Its like I can hot wire my car.
Ok. Is this an expensive and complicated problem to fix?
Ok. I have one more issue. My speedometer is jumping like 10 miles ahead. I know I am not goin that fast and the temp is showing Celsius instead of Farenheit. What do u think is wrong?