The file WaveShell1-VST3 11.0_x64 is not a standalone plugin, but a "wrapper" file used by Waves Audio software to load multiple plugins into your Digital Audio Workstation (DAW) under a single VST3 entry. Download and Installation Process
After installation, the WaveShell file should be located here: waveshell1vst3 110x64 download install
The WaveShell file itself should automatically be placed in your system's default VST3 folder: Windows: C:\Program Files\Common Files\VST3 Mac: Macintosh HD > Library > Audio > Plug-Ins > VST3 The file WaveShell1-VST3 11
Waves is currently on much newer versions (v14/v15). If you are intentionally installing v10: VST3: C:\Program Files\Common Files\VST3<plugin>
If you own V11 licenses, follow these steps within Waves Central: Go to the Install Products tab. Select All Products. Filter by Version 11. Select your plugins and click Install & Activate.