Dear, I'm sorry, I do not have such rare and useless keys.
I only have binding FPP Office 2021 Home and Student codes, but I don't give them away.
It is easier for you to install Office ProPlus 2021 with the Office Home and Student 2021 component selection:
Word, Excel, PowerPoint.
Then activate with the key Office21_ProPlus2021MSDNR_Retail