You only need to manually download an ICC profile if you are using Windows or Linux and need to interpret files created on a legacy Mac. For macOS users, the file is already on your hard drive.
Here is the short answer: Not from a random website. apple rgb color profile download
Do not use generic "ICC profile download" websites. Use only verified repositories. You only need to manually download an ICC
If you are using macOS Ventura or Sonoma, many generic profiles are now bundled inside the General.icc container. Use ColorSync Utility (see below) to extract it. Do not use generic "ICC profile download" websites
Apple RGB was a color space used in early Macintosh computers (e.g., Mac II, Quadra) for CRTs. It has a specific gamma (~1.8) and whitepoint (D65 with a different chromatic adaptation than sRGB). It’s not the same as (modern Apple wide-gamut) or sRGB .