The text you provided is a , specifically a release naming convention used by a pirate group ( GalaxyRG ). It breaks down as follows:
It looks like you've provided a for the movie Oppenheimer (2023), not a request for content or a question. Oppenheimer.2023.1080p.BluRay.DD5.1.x264-GalaxyRG
Buy the Blu-ray, rip it yourself with MakeMKV, and then use HandBrake (x264, CRF 18-20, audio passthrough) to create your own high-quality small file. It will be better than any GalaxyRG release. The text you provided is a , specifically