The entire series, including Season 7, is available on Max (formerly HBO Max) in the US, and often on Netflix or Binge in other regions. These platforms stream in high definition (1080p), which will look even better than a 720p encode.
The "720p Blu Ray" in your title refers to the official Blu-ray box sets, which are widely available and offer the highest possible bitrates for the show. The entire series, including Season 7, is available
You can buy individual episodes or the full season on Apple TV , Amazon Prime Video , or Google TV . The entire series
That specific file name is a release from , a group known for high-compression encodes (x265 HEVC) that maintain solid quality at small file sizes. including Season 7