The short answer if we assume a 5 5 x 3 foot solar panel 200 to 250 watts would generate about 0 75 kwh per day it would take three of those panels to power a fridge that uses 46 wkh per month.
What size solar panel for fridge.
Newpowa 175w solar panel 58 x 26 inches.
The solar panels will charge the battery and keep it ready to supply power to your fridge.
Here are a couple panels that would be good options though with varying wattage levels.
Inverter if you have an inverter it will need to handle about twice as much as the maximum load so a 2 200w inverter should work for this example.