Copy the VST plug-in to  /Program Files/Vstplugins  (create the Vstplugins folder if it is absent)
OR
Copy the VST3 plug-in to  /Program Files/Common Files/VST3  (create the VST3 folder if it is absent)
OR
Copy the CLAP plug-in to  /Program Files/Common Files/CLAP  (create the CLAP folder if it is absent) 