I am trying to test out some modifications to the AI settings for a scenario, and I want to see what the AI is doing. How do I look into the AI's cities to see how long it will take them to grow in size and produce units. And how to I see their Financial screens. I need to see how much money the AI has and how much of it is being spent on city maintenance and inflation.

Is there a way to do this? I cant seem to do it in the world building.

Thanks for any help!

Try the total stupid way, like i do:
Put via worldbuilder a f******* big number of great spies in their cities, and infiltrate them.

Enable cheatmode. Then pres ctrl + z and it reveals the entire map. when I'm doing alot of development and balance testing, I'll usually place my settler off in the north pole somewhere and just observe the AI using this method. There is also an AI autoplay component available for download as a mod (it's built into RevDCM), but you can't pause it, and examine things, so I haven't found it very useful, unless you're only interested in testing for stability.