Full, consistent, ad-free Hindi dub of all 51 episodes is not available on a single legal streaming service at this time due to complex licensing splits between Hasbro, dubbing studios, and broadcasters.
Since no official Metal Masters Hindi dub exists for purchase/streaming, the "best" fan version is usually found in shared by Hindi anime communities on Discord (search for "Hindi Anime Community" or "Desi Anime"). They often re-encode episodes with stable audio and good video. Beyblade Metal Masters All Episodes In Hindi Dubbed -BEST