Hi Ithelp13167-0214,
Is the vstor_redist.exe installing both the x86 and x64 software on my PC
Nope. The x86 and x 64 Redistributables are components of VS tool for office runtime. As control panel shows, there is only VS tool for runtime (x64) on your PC. The installer detects the platform of the OS (x86 or x64) and only installs the version matching the OS.
Best Regards,
Dylan