What are these black dots of my scalp? Hair transplant 10 months ago (Photo)

It sounds like the black dots you're noticing on your scalp could be hair follicles that are in a resting or dormant phase. After a hair transplant, it's common for transplanted hairs to go through a growth cycle, and it can take anywhere from 12 to 18 months for the full results to become apparent. The black dots you're seeing may be hairs that are still in the telogen (resting) phase, and they could potentially start growing out as your hair cycles into the anagen (growth) phase.
Given that you're 10 months post-op, you're still within the window where new growth can occur, especially in areas like the crown, which tends to take longer to fill in compared to the front and mid-scalp. It’s also a good sign that you're taking finasteride, which helps to maintain the existing hair and can potentially stimulate some additional growth.
It may just be a matter of patience at this point, as the final results from your transplant are still developing. Keep monitoring your progress, and you might see those hairs break through in the coming months.