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Yes, you can put a link or a URL of the excel file on your form so that your users can download it.
However, you need to upload it first to your FTP server or in a cloud storage app like Google Drive or Dropbox. After that, you need to get it's direct link and then add it as a text link on your form.
Here's a screencast on how to add a text link on your form.
Hope this helps. Let us know if you need any clarifications. Thank you.