If the tablet is an Android device:
Trying to install Windows on a tablet is no easy work. First of all, if during the installation, the device gets bricked, it'd be hard to recover it. Second, if it's an Android device running some really low MediaTek processor, just don't think about having Windows 10 as Android can't even run on a MediaTek. Third, I don't think an Android device manufacturer distributes drivers for a Windows 10 OS so users can install it on their Android. Fourth, if the device is using a Qualcomm processor and is running some other Windows version, contact MS Support for installation steps.