Sorry to hear you are having issues. You should be able to open up Start10 Configuration panel via Window10 start menu -> Startdock->Start10.
From there check if you have select "Windows 7 Style" on "Which style of Start menu would you prefer?" and on "Control" section.
What should happen when you are on the desktop part , select "Start button shows Start menu" on the first drop down menu option.
Stardock Community Assistant.