Hi,
The Product version is probably the only that would be useful. Current version is 5.0.2, but could be 5.0.1 or older. This displays on the SWG GUI under Administration > Updates -> Web Gateway Software Updates -> Current Sofware Version
Platform and Platform version in our systems lists Linux and linux versions so you can use any of those and it will be fine. Those can be changed afterwards.
HTH,
Federico