To make sure your food is safe and doesn't grow bacteria, its best to set the temperature of your fridge between 32-40° but most common is set at 36°F. It's also best not to crowd the fridge with food so that the air can circulate.
A refrigerator should be maintained in "at 40 °F or below, and the freezer should be at 0 °F." In order to keep all foods refrigerated and avoid the food rotting or deteriorating.
