From the sounds it you’re looking for a serial number look up or authenticity checker (Customer will enter a serial number, then it will check if its valid or not and if its valid, then show the detail associate with it), is it right? let me know if I get it wrong
We developed an app that have serial number lookup / authenticity checker as small part of the functionalities (the app can do a lot more, so let us know what you want, then we can better advice you), here is what you can do with the app
Upload the serial numbers and associate with a product or provide download files if you want
Ask the customer go to the frontend
Customer enter the serial number, then the app will check against the serial numbers on the record, display data associate with it if it have - see the attached screenshot
All the fields and content/title/descriptions above are customizable, so you can have a picture of the product with serial number, so customer know where to look for serial number etc, here is the doc for it
Hope that’s what you looking for, Let us know if you have any questions