If you want to make sure the menu bar remains visible even when in full screen mode for any app on the Mac, here’s what you can do:
• Pull down the Apple menu and go to “System Preferences”
• Choose “Dock & Menu Bar” preferences
• Uncheck “Automatically hide and show the menu bar in full screen” so that it’s disabled
Now when you enter full screen mode on any window or app in macOS, the menu bar will remain visible at the top of the screen.