it seems there is a new method to unlock the bootloader in Android 10 can someone try this and see if it works on Pixel 2?
https://www.xda-developers.com/how-to-unlock-bootloader-verizon-google-pixel-xl-running-android-10/
https://www.xda-developers.com/how-to-unlock-bootloader-verizon-google-pixel-xl-running-android-10/