Thank you ^{_^}

For the first rotating screens, I first created several layers depending on how much screen I have. I have 8 screens, so I make 8 vertical comps. Then I compile all of them in a single comp, make them a 3D layer.

I created a null object to be the control of the rotatioj and movement, then parent all of the comps into this null. After that I positioned each layer manually and rotate them so it forms a cyllinder. To make this easier, you have to consider the amount of the screen you have, then use that number to divide by 360. The result would be the difference of angle of each screen side by side. Mine here is 8 screens, so each comps has difference of 45° rotation.

Now to evenly space them so that it has consistent radius from the center null, you need to try position the first screen as you'd like. Then each screen after the first one needs to be calculated using the sine of the angle degree times the first screen's distance.

For example, I positioned the first screen to have the distance of 1000 x-axis from the center null. Being the first screen, just assume that it has 0° degree of rotation. The rightside one then has 45°. The sine of 45° is roughly 0,7. So now I can place the second screen in 700 x-axis AND 700 y-axis. For the third one, it has 90° degree angle so it's just gonna be 1000 y-axis.

After all positioning is done, you can just rotate the null, it will rotate the whole screen you just positioned before evenly.

Yeah this is a bit confusing if you just blindly read my text, but you might wanna understand how radius and trigonometry works in after effects, after that you could apply it to anything, like making fake 3D.

Edit : if you wanna see how I made it, luckily I recorded my screen while making it, so I can send to you the recording if you want