You have to see how to export to txt/Excel file parameters under a geometrical set with a macro (I suppose you have parameters there). Or export parameters globally from your CATPart or CATProduct.
If I can remember (I don't have a CATIA screen right now), click the axis system in the lower-right corner (this will make the tree active), and right-click in the screen background for the options you're looking for. Don't forget to click on the axis again to de-activate the tree!