I don't understand
Neither do we. Your post is completely devoid of any useful details such as system info or a proper explanation of what you are actualyl trying to achieve here.
InDesign server is an automation tool and has no user interface. You probably downloaded the wrong application.
Did you really want to download InDesign Server? It seems that you are mistaken and that you wanted the "normal” version of InDesign. InDesign Server runs with no interface and has to be installed with Terminal.