Red spots/sunburn areas on my face from using Tazorac from last night then being exposed to the sun, will it eventually go away?

Thank you for your question. I'm sorry to hear about your skin and sunburn. Unfortunately, one cannot tell you if the red marks will go away because it depends on the severity of the sunburn. The earlier treatment is started, then the better cosmetic outcomes may be. I highly recommend you consult with a board certified dermatologist to have your skin evaluated and to discuss treatment options.