No, you should not attempt to charge your car's A/C system if it has no refrigerant at all in it. If your car's A/C system has no refrigerant, it likely has a leak that needs to be identified and repaired first.
Adding refrigerant to a system with a leak is only a temporary solution and will not fix the underlying problem. Additionally, releasing refrigerant into the atmosphere is harmful to the environment and is illegal in many places due to its contribution to ozone depletion and climate change.
If you suspect your car's A/C system is low on refrigerant or has a leak, it is best to take it to a qualified automotive technician or a professional A/C service center. They will be able to diagnose the issue, repair any leaks, and properly recharge the system with the correct amount of refrigerant following the appropriate environmental regulations. This ensures your A/C system works efficiently and safely while minimizing any negative impact on the environment.