Its not blowing out any hot air on 2 my window screen but it blows hot air in2 the car but on max heat it cuts everyting off

You have problem in 1) Your air flow system have gone down and some plastic valves that opens to cold position or to hot position is broken. Solution: remove panel and check this plastic valves that controls airflow.
2) Your heat salon radiator is very poor and can't blow in all directions. Solution: replace salon heat radiator.
3) Your cooling system don't have good limit of coolant. Solution: fil it to min - max position.
4) Your cooling system isn't bleeding. Solution: make system without air in it.
Hope this will helps.

1--BLEND DOOR NOT SEALING PROPERLY
2--FRONT CONDENSOR PLUGGED UP WITH DEBRIE
3--FRONT CONDENSOR NOT TRANSFERING HEAT (SPRAY WITH GARDEN HOSE WHILE ---RUNING SYSTEM IF IT WORKS BETTER CONDENSOR MAY HAVE TO GET CHANGED
4--WRONG CHARGED WEIGHT IN SYSTEM
5--COMPRESSOR CYCLE TIME NOT CORRECT
6--IF COOLANT CABLE VALVE ON SYSTEM MAY NOT BE CLOSING CORECTLY
---TRY PINCHING OFF THE COOLANT LINES TO HEATER CORE

I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

There is a Flap on heater box and on some of those it is motor controlled, but it sounds like the flap is not switching back and forth

could be the blend door under dash. not shuting all the way letting heat in. or bad cable

Hey Summers,, Are you running the A/C with the temperature set at max heat?? If yes. STOP... the A/C is for COLD air..As far as the fan speeds not working....you may have a fan switch that is going bad..(my vehicle is doing this!)..

Yeah Ron, the flap that covers the heater core is open and when you're moving the air is pushed over the heater core and into the cab your in. Possibly just a vacuum line of that controls said flap. Check all vacuum lines for good proper connection to these flaps because all of them are vacuum actuated.

I know from experience that if the coolant is to low ( not just the freon levels in the compresor but the antifreeze/coolant level as well) the AC system will not cool and will blow hot. Check the coolant Antifreeze and freon levels, even with the Coolant being a little low my 1998 Ford E150 Van will blow hot. After you have ruled out of these possibilities and the chance it is the thermostat most likely the problem is what Ford calls the "Flap" it controls the air flow through the vent system when you switch from Heat to AC. When the Flap is working it closes off one systems air flow so as to not interfere with the current climate selection.

Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

Heater core is gone Kaput,all plugged up,,you will need to replace it.