Likely the name of the website or uploader group (7starhd) where the file originated.
The Matroska Video file format, commonly used for high-definition video files. Interesting Facts About the Movie tadap-2021-hd-720p-www-7starhd-social-mkv
The title and release year of the film, a romantic action drama starring Ahan Shetty and Tara Sutaria. HD 720p: Indicates the video resolution (1280x720 pixels). Likely the name of the website or uploader