Hi,
Sorry you’re having issues with your serial number. No one here can tell you you serial number. Here is the Apple Support document on serial numbers,
https://support.apple.com/en-gb/HT204308
If this can’t resolve your serial number issue, you’ll need to contact Apple Support. I don’t know what country your in, so here is the link to determine how to best contact Apple Support,
https://support.apple.com/en-us/HT201232
I’m sorry I couldn’t help more, but this should expedite a resolution to your issue. I hope this helps and best of luck.