I didn’t really get what you were trying to do please elaborate but as per my understanding of your query you’re trying to URL in each row inside a column, here is the solution for this
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Take one excel application scope and give it the path of the excel file you’re trying to read and create a ‘data table’ object.
Next, use ‘for each row’ activity and give your data table object
Then within this loop use ‘assign’ activity and set the url=row.Item(“urlColumnname”).ToString()
After this is done you need to navigate to the website to do that use ‘Navigate to’ activity to visit each url.