Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
What email program are you using?
You have to "Attach" the resume file to an email. That is usually done using an icon that looks like a paperclip.
You also have the option of just saving the resume file to your OneDrive. Then you can retrieve it when you are at the other location.
Actually, it is probably a good idea to save or print the resume file to PDF format. That way you can be sure that there won't be any format changes on the other computer. Then email or upload to onedrive your PDF resume file.