There are many standard reports pre-built in GnuCash, all available from the Reports pulldown menu in the main account window.

When you select a report from the list of reports, that report is first run with its default settings. Once you have opened the report, you can modify its parameters by clicking on the Options button on the toolbar. Under Options, you will see the different settings that you can change for each report. Note that for different reports, the options will be different.