repitch.vst3 is the folder which contains the “Contents” folder (it’s technically a file bundle, which is why it has an extension).
In your screenshot, it looks like repitch.vst3 is placed one directory too deep. It should read C:\Program Files (x86)\Common Files\VST3\repitch.vst3\Contents...
Try moving repitch.vst3 up a directory, and removing the .vst3 extension you added to the file in the Contents/MacOS folder.