HiI would like to know if I can relate datas from AutoCad and
Excel. For example: by the time I create a polyline on cad, instantly,
on excel, appears a new line which is related to that object created
before. What I mean is, for every object created (on AutoCad) a new
line (on excel) would appear to represent that object.Thanks

There are several ways to approach such functionality. Do you need an export of the current DWG, or do you need to start with an empty drawing and sheet and add objects to both documents?