In anticipation of certain question:
Yes: This will work on ANY USA carrier.
Yes: This phone IS getting Android Q (rollout started Sep 3rd).
No: You CANNOT unlock the bootloader (unless a new exploit was found, since the Verizon version comes with a bootloader which cannot officially be unlocked).
No: It doesn’t come with a cup holder or a kitchen sink.
Except some carriers don’t have 4G LTE capabilities, though I guess this phone could still work on a lower level.