The following text is from the MS docs site but screen shot from my lab (no need to recreate good document): https://docs.microsoft.com/en-us/sccm/core/get-started/capabilities-in-technical-preview-1802#report-on-windows-autopilot-device-information

Windows AutoPilot is a solution for onboarding and configuring new Windows 10 devices in a modern way. For more information, see an overview of Windows AutoPilot. One method of registering existing devices with Windows AutoPilot is to upload device information to the Microsoft Store for Business and Education. This information includes the device serial number, Windows product identifier, and a hardware identifier. Use Configuration Manager to collect and report this device information.

Prerequisites

• This device information only applies to clients on Windows 10, version 1703, and later
  

1. In the Configuration Manager console, Monitoring workspace, expand the Reporting node, expand Reports, and select the Hardware – General node.
   
2. Run the new report, Windows AutoPilot Device Information and view the results.
   

1. In the report viewer click the Export icon, and select CSV (comma delimited) option.
   

1. After saving the file, upload the data to the Microsoft Store for Business and Education. For more information, see add devices in Microsoft Store for Business and Education.