To boil frozen food with chicken without microwave
There is no recommended time. You just cook it until it is done. 

If the food is pre-cooked (which is common with microwave-ready food), you only have to bring it to the temperature you like to eat it at. Else, you cook it until whatever is inside is cooked through. You can use a thermometer to determine the exact moment, but I wouldn't bother for a microwave-ready dish, as it is unlikely to be sensitive to overcooking.