Hello
Unfortunately RNDIS/Ethernet Gadget is not a compatible hardware for Windows IoT (ARM), there for the driver is not available. You can check the hardware type compatibility list here: https://learn.microsoft.com/en-us/windows/iot-core/learn-about-hardware/hardwarecompatlist
the possibility of using a AMD64 Driver on a ARM64 is discarded due to the architecture differences. You can check the feature for x86 emulation, but personally I have never played around so I can't guarantee any result: https://blogs.windows.com/windows-insider/2020/12/10/introducing-x64-emulation-in-preview-for-windows-10-on-arm-pcs-to-the-windows-insider-program/
----------------------------------------------------------------------------------------------------------------------------------------------------------
--If the reply is helpful, please Upvote and Accept as answer--