Because Windows (prior to Windows 11) and macOS do not natively support RAR files, you will need third-party software: Need to open, create, or convert a RAR file? - WinZip

: If you did not expect to receive this file or downloaded it from an unfamiliar website or unsolicited email, you should delete it immediately without opening. How to Open a RAR File Safely

: Before opening this specific file, it is highly recommended to scan it with a reliable antivirus tool like Malwarebytes or Windows Security.