Hi SiddNair,
You can download by either clicking the Download button on the Order Details page or by right-clicking/ctrl-clicking on the Download button and clicking Download linked file as in Safari; or Save Link As in Mozilla® Firefox®. Do not rename the download file as this can cause installation problems.
For the detailed information, you can refer to this link:
www.microsoft.com/.../download
If there are any other concerns about Office for Mac, I suggest you ask for help via the following link:
Thanks,
Cherry Wang