There's different ways to export Project data.
1. Export Data
It allows you to export in a csv file all the information for a Project such as: Name of the Objects involved, Quantity of the Objects involved, Unit price, Total Sell of Objects booked/quoted, Project Custom Fields, Client details, etc.
Go to the Edit Project Window > click on the report icon at the bottom right corner > Export Data.
Select the information you want to display in your csv file by pulling the different fields available in the Show Area.
You can save the selected data as preset for further exports at the bottom left.
Press Export and save the Project data.
2. Configure Financial Report and export to CSV
From Project window > go to print menu > Financial Report.
Use an existing (export to *.CSV IF available) or create a new template. Press the green +, enter a name and choose "Object" as Group 1.
In the preview, tick the data in ROWS to include in the export.
Then export the data to CSV.