Check it on program folder (windows) or from windows start>all programs, on mac i think it's on application folder.
If you check your Creative Cloud desktop app, it should says the software is 'Up to Date' when the installation is completed. During download/installation, there should be a progress bar next to the product name indicating how much longer it will take.
Like Salah suggested, try check your application/program folder to see if you can launch the software or not. See: Creative Cloud Help | Launch Creative Cloud apps
Let us know how it goes!