Currently there is no direct exe to download that. You need to download a web installer and then pass command line argument to download it for offline use.

 

Please check the below link that guide you to download it offline and use it on another pc or future use

https://docs.microsoft.com/en-us/visualstudio/install/create-an-offline-installation-of-visual-studio 

 

Note: Download size will approx 16GB