HI,

Am not sure if i understand you correctly. By default you can export the data as excel from the Pivot view and from the tree view also.

If you open any tree view, you can see a download button in the top left of the screen, by which you can download the data as excel.

If you need to build custom report of your own, it is also possible in odoo by adding custom codes into the system.

See the steps of creating an Excel report in odoo: https://www.youtube.com/watch?v=fnIpIs4UqVs

Thanks