What operating system are you trying to run Snap Creator on?
If Linux this is very easy - you can just untar the file and copy the Snap Creator Agent directory wherever you like.
If this is Windows you will need to uninstall/reinstall.
For Windows I'd recommend following the upgrade documentation in the installation guide.
This will tell you how to backup all of the Snap Creator information so that you don't lose anything.
basically you will back up certain directories, uninstall, reinstall, stop services, copy over the files you backed up, then restart the services.
If you are not changing versions you don't need to run the upgrade command.
Hope this helps,