Based on the photos, this looks like it is early in the post op process. Because of that, I would recommend waiting this out. This should settle as the healing process progresses, but there is no way to tell at this point. It is a bit unusual in appearance but there is a chance that this will improve.
Hope this helps. Good luck.
I'd give it some time...
...but that's one of the reasons I really don't like the vertical breast lift. Having my patients sit around for months with breasts that may or may not settle perfectly is difficult for the patient and the surgeon. This will definitely improve and the "scalloped" look is a combination of central scarring and retraction and swelling on either side. I just can't ever get it to look as wonderful as an anchor incision- may be that others can.
Breast shape changes after reduction
With breast reduction (in particular the vertical technique) it can take upwards of 3 months for the lower breast skin to stretch out again and the breast tissue to settle into place. You're only a few weeks into it, so I would take nothing at face value at this point, and just continue following your surgeon's orders.