Install Only Mongo Client/Shell - not MongoDB on Windows
On Windows, you can install per component using with the unattended installation option.
Once you've downloaded the .msi
installer from MongoDB Download Centre. You can install just the mongo shell component using:
msiexec.exe /q /i mongodb-win32-x86_64-2008plus-ssl-3.6.5-signed.msi ^
ADDLOCAL="Client"
See also Run the Windows Installer From the Windows Command Interpreter
Upon executing the .msi installation file you can do a custom install of the specific components you want.
Mongo Download: https://www.mongodb.com/download-center/community