Remove “best films” from home screen Apple tv

Hi. If you mean the Movies app, you cannot remove it.

But you can prevent the splash display at the top of the screen by moving the app to a lower row. Only apps in the top row can access the splash screen. To move an icon, click/hold on it until it shakes, using the remote touchpad. Then, gently swipe on the touchpad to move it. You can also make it disappear by putting it in a folder. Drag it on top of another icon to create a folder.