Hi @Aamir Jamil
The HUP license is limited to use on one computer at a time and limited to the time you are employed with the HUP sponsor.
I find the references, hope the information could be helpful:
Get help installing Office through Microsoft Workplace Discount Program
Install or reinstall Office or Microsoft 365 through Microsoft Workplace Discount Program
If you still cannot find the key or the installation package, it's recommended to contact Microsoft Support for further assistance.
Thanks for your understanding.
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