No, server is headless, no GUI. That’s actually the case everywhere, whether the server is running on Linux, Roon OS, or indeed on Windows and Mac. But on Windows and Mac there is a separate GUI app, which is running either on the same machine as the server or on a different one.
On Linux, however, the GUI app doesn’t exist. If you want to run a GUI on the same machine, you’d have to install the Windows version under WINE.