If i lose weight what will my gynecomastia look like? droopy?

Depends: skin laxity: This depends on the severity of your conditions and the degree of skin laxity and the magnitude of weight loss.

Depends in skin: It depends on the elasticity of your skin. The younger you are and the lack of a history a weight gain the better it will look (like a balloon when you let the air out). If your skin is inelastic it more like a plastic bag emptied of water...More loose.

Depends on Situation: There are many variables involved. Your age, amount of excess weight, excess skin present, quality of skin elasticity, genetics... Are some of these factors. Once stable weight is achieved, surgical procedures such as excision, liposuction surgery, skin excision etc. Maybe very helpful. Best wishes.