I have brownish/dark maroon patch on my cheek after a pimple caused most probably by fungal/bacterial infection....how can i get rid of the spot?

Brown spot=No scar: This is the normal skin reaction when healing after inflammation if the patient is tan or has olive or brown skin. Is called PIH. It's not a scar and it willl fade away with time. To speed up the lightening, protect from sun exposure always, and apply twice a day a cream with hydroquinone(never above 4%), glyzirrhiza or licorice glycolic acid or retinoic acid.