how to download

if you mean the cc desktop app, install the cc desktop app from here https://creativecloud.adobe.com/apps/all/desktop?action=install&source=apps&productId=creative-cloud 

if you have trouble downloading, use the alternative download site at page bottom here, https://helpx.adobe.com/in/download-install/kb/creative-cloud-desktop-app-download.html

if you mean any other adobe cc program, and use the above linked cc desktop app to install your adobe subscription and trial programs.

Which application do you mean. Please describe more detailed.