4 weeks post op revision rhinoplasty, scar not healing well and has a burning sensation/feeling, is this normal?

Always hard to tell from photos but it looks ok although more red than normal. Definitely would contact your doctor as that person will know your situation best. The burning can simply be a nerve irritation and will likely resolve with time. Most likely you need more time to heal. Keeping the incision moist with something like Aquaphor or Vaseline may help as well if it is drying out too much. Remember to avoid the sun as that can make scars more red and irritated. I hope this helps and everything improves soon!