How do i get the freeon in the ac its not getting cold

Air Conditioners don't 'Use' freon per se. A common fallacy is the thinking that if "It's not getting cold, then it needs freon." If your unit lost freon, it has a leak and adding freon will only be a very short term fix.

If you're certain that you need freon, you'll have to take the unit to a certified HVAC technician. EPA regulations make it nearly impossible for the average handyman to service A/C units, since the freon must be handled in a very specific way with equipment not generally available to the average owner, was well as R-12 freon gas which can be bought only by licensed HVAC technicians.

However, there are many other problems that are far more likely to be the cause of no cooling than loss of freon. It could be something as simple as dirty condenser coils (you'd be surprised how common it is that a simple cleaning of these coils will 'fix' a non-working window A/C), to a defective thermostat switch, to other defective switches/controls.

Unless it's a very obvious leak, I always suspect a loss of freon LAST on my list of possible cause of non-cooling in these units.