GTA VI code-in-box copies are due to start shipping November 12

Rockstar says physical copies are expected to start shipping or become available for pickup November 12. The package contains a download code for the console version. If your retailer has it ready, you can redeem the code and start pre-loading before the November 19 launch.
Check the order status with your retailer and verify the platform printed on the box. Rockstar lists region restrictions for PlayStation codes by account region and says Xbox codes are not region-locked. Its support page has the full list.