Once extracted, you will likely find a Setup.exe or an .iso file.
To use this file, you cannot simply open "Part 06" alone. Multi-part RAR files work as a single unit. download-wwe-2k19-apun-kagames-part06-rar
: Note that many "repack" or third-party game installers are flagged by Windows Defender. You may need to temporarily disable it or add an exclusion to the folder. Once extracted, you will likely find a Setup