Bump (inside) on the forehead. Can anything be done about this? (Photo)

You do have relatively two mild bony prominence, one on each side in the suprabrow area. But apart from that, your forehead is relatively normal. I think what is exaggerating the concerns you have highlighted is your high hairline. I think you would benefit from simply considering hairline...

It's hard to tell if this is an osteoma from this photo, It would require a full exam. But if the appearance bothers you it can be easily addressed and removed. I do this often and it's a relatively small procedure. Best wishes.

You appear to have a normal forhead but with a high frontal hairline. Hairlines can be surgically lowered with scalp advancement and/or hair transplants.  In my own practice we tend to turn to hair transplants because it is less invasive.Hope this helps.