If you are interested in reporting on questions/answers users have given on your Service Catalog requests, here is a quick way to filter or export this information from ServiceNow.
From the ServiceNow Wiki, here is some documentation to read before you start building your report.
Note: Speed of this report depends on the number of variables and requested items in your system.
Requested Item Variables Report
Visible to: Everyone Type: List Table: Variable Ownership [sc_item_option_mtom] Group By: Parent Item Columns: - Parent Item - Parent Item.Request.Requested For - Dependent Item.Order - Dependent Item.Question - Dependent Item.Value - Created Filter and Order - Parent Item.Item is <your item> - Dependent Item.Value is not empty
Hope that gives you some ideas when you are making your own Requested Item variables report.