Using Read range workbook activity, youu can read the excel file and output the data in data table.
Write range workbook activity, you can paste the copied data in another excel file.
I’ve tried but I don’t manage to open the downloaded file. I saved it as a variable but when I used the Excel activity it does not recognize it so I can manage to read range from that workbook.
I suggest doing the free online training on the UiPath Academy web site. It teaches you how to do things like work with Excel. You don’t copy/paste. There are activities for reading/writing data from/to Excel.