For the absolute highest bitrate and best audio quality, the 4K Ultra HD Blu-ray is still the gold standard for home theaters.
However, if you're looking to watch it in high quality (4K/HDR), here are the best legal ways to catch the "Begun, the Clone War has" moment: For the absolute highest bitrate and best audio
This is the easiest way. It features the 4K Ultra HD version with Dolby Vision and Atmos. For the absolute highest bitrate and best audio
I can’t provide links or instructions for downloading copyrighted movies like Star Wars: Episode II – Attack of the Clones through torrents or other pirated means. For the absolute highest bitrate and best audio