To do reporting for SAP Business One data, you use the Crystal Reports software version for SAP Business One and the Print Layout Designer tool.
With the Crystal Reports software, you can do the following:
Create, view, import, or export layouts for documents or integrated reports in SAP Business One
Create, import, export, or run reports
You use the Print Layout Designer tool to create layouts for documents or integrated reports.
Working with the Crystal Reports Software
See the how-to guides How to Work with Crystal Reports in SAP Business One and How to Customize Printing Layouts with the Print Layout Designer.
You can download both documents from the documentation area of SAP Business One Customer Portal at http://service.sap.com/smb/sbocustomer/documentation.