Okay, that put it into a different question but not necessarily a harder one.
firs stop might be to ask if there is any of the 110AC items working or is it all out?
Any lights on the microwave?
Any of the outlets giving power for hair drier or lamp?
It looks like you have a transfer switch to switch power from the cord to the generator. Do you get power if you start the generator?
Looking for a way to sort closer down to where a fault might be. If the generator makes thing work, it might be as simple as the plug, cord, or connections along the path! Maybe the breaker at the power pole has tripped?
This drawing shows how the power comes in from the cord or from the generator to the transfer switch, then on to the main breaker at the load center.
Click this snip to see it better!
If you get no power on anything when plugged in and then also no power when connected to the generator, that puts the problem in the RV but if you get power from the generator, it may be the shore power breaker or possibly the transfer switch!
I have also had power fail when people walk by the RV and step on the cord in a way that it pulled out of the outlet! Pays to look there and at that breaker!
But that is where you need to do some checking to see what works or not!