Just as an example and by no means the only solar set up, but works well for us.
We are full timers and camp off grid 90% of the time. We have an Amana 18.5 cu.ft. residential refer with icemaker and run it on a MSW inverter.
Our batteries are 3- Deka 8D 12 volt AGMsw totaling 735 AH. We have 645 watts of solar.
My advice is that if you go with around 100 watts of solar for each 100 amp hours of storage capacity, you will be safely in the ballpark under most conditions, but there will be times when conditions will require some form of generating power other than solar.
