Delete movie

You can hide it . See: Hide and unhide music, movies, TV shows, audiobooks, and books - Apple Support

What happens when you hide an item?

• Hidden items won't appear in your Library on any devices that you use with your Apple ID, unless you downloaded the item onto a device.
• If you use Family Sharing, family members won't see the item that you hid, unless they downloaded the item before you hid it.
• If you or a family member downloaded the item to another device before you hid it, you can delete the item from that device. Learn how to delete music, delete movies and TV shows, or delete books and audiobooks.
• The record of the purchase won't disappear. You can find the item in your purchase history.