Could you explain a bit more about what you are looking to do?
In Godot 4.0 there will be the ability to make separate game windows, but that would display the information across multiple monitors, not condense them into one. In Godot 3, it shouldn't be possible to have more than a single window with Godot, at least not by default (or that I know of at least).
To condense the information into a single screen, you probably need to place all of the UI nodes into the same scene, and then instance that scene once. If the information changes, then you'll probably want to send signals to tell the UI to update.