I have friend that works for Oaks Farms. He runs the ice cream to stores and gives them frizer along with the ice cream. Well he actually owns it. He has asked me if I can switch the 20 amp breaker to a 30 amp breaker because the 120 volt receptacle that the freezer is connected to keeps going out so he thinking it's the receptacle Cause the freezer is brand new. Im thinking Before I switch it I should do the Minnium Calculation to see how much the volts is the freezer giving to the receptacle.

NO, you should NOT switch it at all. If there is a 20 in there it is there for a reason.

Leave the circuit alone and find out why it is tripping. Better yet, call a pro to troubleshoot it. This is NOT a DIY project. This is in a commercial setting and you have NO place doing electrical work there if you are not qualified.