The hell is Windows Store? Just download VLC Player....
It's the future of VLC Player and it makes more UI sins than the mobile app versions.
Full Screen is integrated with maximize/minimize/close buttons on the title bar, but they go behind your task bar if you have it on the right making it difficult to get to them.
There are no skip controls. I tried some of the old keyboard shortcuts I remember and it ended up increasing the playback speed, which is something they inexplicably allow you to do with the mouse too. I was having trouble getting it back to 1.0x playback speed using the mouse (kept landing on 0.99x or 1.01x) so I tried to use the keyboard shortcut I had just stumbled on and it no longer worked. You also can't leave full-screen with the ESC key. There is no right-click or on-screen menu. That's just the start of it.
The built-in video player in Windows also couldn't exit full-screen with the ESC key and had not right-click or on-screen menu. It also had no skip/FF/RW, so I tried pressing left and right. At first it seemingly did nothing, but pressing right enough times would suddenly skip forward and then allow you to press left to skip backwards. Even though it skips farther than the 30 seconds forward, 5 or 10 seconds backwards that I'd prefer, it seems like a solution... at first. You soon realize that the reason it took many presses to begin is because the UI was passing focus along the button objects until it got to the scrubber progress bar and that it still has focus. As long as any of those objects have focus the playback controls will not go away. You can't click on the video to dismiss or de-select it either: you have to click one of the controls that you had no intention of using, like Pause. Having to Pause/Play with the mouse every time I skip is asinine. There is no way to select several files and play them. If you open a selection of several videos, it only plays one of them with no way to add the others to the queue. That's right: It's a media player with no playlist.