I think I figured it out (for the most part). Can someone spot check for me?
IF({Current Fee} >= 1.20*{Average Fee},“ :star: ”, IF({Current Fee} >= 1.05*{Average Fee} ,“ :star: :star: ”, IF(Current Fee} >= 0.95*{Average Fee} ,“ :star: :star: :star: ”, IF({Current Fee} >= 0.80*{Average Fee} ,“ :star: :star: :star: :star: ”, IF((Current Fee} < 0.80*{Average Fee} ,“ :star: :star: :star: :star: :star: ”)))))