While the specific file belongs to a private user, this naming convention and similar "draft" text messages were notably linked to a viral that circulated widely. ⚠️ The Military Draft Hoax
Short for WhatsApp, the platform that generated the name. 0000: A serial number for files created on that same day.
If you are looking at this file on your device, here is what the name reveals: Indicates it is a video file. 20190602: The date the file was created (June 2, 2019).