It means that Pirates of the Caribbean 6 does not currently exist as a finished film. Therefore, any claim of a "Tamil Dubbed" version available for download is false.

: Names like Austin Butler and Florence Pugh have been linked to the project in various reports, though nothing is finalized. Tamil Dubbing Information

Downloading copyrighted content from piracy sites is illegal in India. While the authorities often target the site owners, users can also face penalties. It is always safer to wait for an official release on platforms like Disney+ Hotstar, Amazon Prime Video, or in theaters.