Hello,
Welcome back to the forums! Please take a look at the link below:.
In the meantime, you’ll want to look at nodes relating to reading xlsx/csv files. Both can be done with the out-of-the-box Dynamo nodes.
Is it a good assumption that you’ll have many rows of data? Are you still looking to select the element in Revit each and every time, or are you trying to automate that as well?
If you have any sample files or sketches of what you have attempted in Dynamo so far, please post them as a starting point.