Typically score lines are extracted from the border layer (which FAB 3000 already outputs). However there will be a problem for many manufacturers when trying to score your proposed panel (see link below):
Note: We can make FAB 3000 extend the score lines to the panel
edge (and we'll add it to the update of FAB 3000 next week),
however most PCB manufactures will simply take the border lines
and adjust them to best suite their scoring capabilities.