Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello Lincoln Gardens,
Thank you for reaching out to Microsoft Q&A forum
I can see that you have mistakenly redeemed Office 2024 into the wrong account. Unfortunately, product key once redeem can't be switch to another account.
Since support is also unable to help you and Best Buy seller unable to cancel the redeem code.
The only viable solution now is to use the account which you redeem Office 2024 as your account for Office only while your main account is use for everything else.
Feel free reply back to this post if you need further assistance, I'll be happy to help.