You're generally out of luck. There's no "force unlock" for modern Motorolas without the official code, as the RSA signature check is hardware-backed.
For most devices, requesting an unlock code voids your warranty immediately. motorola unlock bootloader site
Download and install the Motorola USB Drivers and the SDK Platform-Tools (which include ADB and Fastboot) on your PC. Step-by-Step Guide to Unlocking Your Motorola Bootloader 1. Enable Developer Settings You're generally out of luck