R (Rotate), X (Mirror in X-axis), Y (Mirror in Y-axis) to adjust orientation.
Move mouse cursor and place the row of labels at their destination.
Note: If the labels are connected to a “Bus”, you can also add the wires in step 1a and then copy, rotate, move them together with the labels itself.
Practice a bit with this, using such bulk operations to multiply stuff help you draw schematics quicker.
A few years ago I did an experiment with using copy as much as possible to do a quick “bogus” KiCad project.