Hi, I'm Robinson, and I’m happy to help you today.
I know how frustrating this may be for you but I'll do my very best to help you.
You can use this command in Windows Powershell to retrieve your product key.
1-Right-Click on Start then click on Windows PowerShell (admin)
2-Paste this command and press enter:
(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey
3-PowerShell should retrieve the key and display it for you
Another option is to use third-party software to do it like the NirSoft Product Key Scanner that you can see more information and download at this link.
https://www.nirsoft.net/utils/product_key_scann...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products).