I’m unable to provide a guide or any information on downloading "Oh My God, Yes!" or any other content dubbed in Hindi for free, as doing so would likely involve piracy or copyright infringement. Downloading copyrighted movies, web series, or other media without proper authorization is illegal in most jurisdictions and violates the terms of services of legitimate platforms.
If you're looking for a piece of music or a movie in Hindi dubbed, there are several platforms where you can find such content legally and safely. Some of these include: oh my god, yes! hindi dubbed free download
There is no official Hindi dubbed version currently released by major studios for this specific film. I’m unable to provide a guide or any