Where is movie menu

Im trying apple tv on my macbook pro. There are no tabs nor menu? How does one see what's available.

The Apple TV app will have tabs and menus.

The website tv.apple.com does not have tabs or a menu (nor does it need to at this time). All the Apple TV+ content is linked on the home page. The website will only show Apple TV+ content, not other content that the Apple TV app will show.

MacBook Pro 13″, macOS 10.13

The Apple TV app on Macs requires at least macOS Catalina 10.15, as the app is bundled software with that version macOS.