My boyfriend has really sensitive skin and breaks out really bad with acne all over his body, what soap, lotion can help and clear it up?

Depends. You should try to eliminate what he is "sensitive" to in his environment first. He may be sensitive to laundry detergents, colognes, animal dander, pollens, mold, or even foods. Try changing all soap products to hypoallergenic like neutrogena products for example or ivory snow / dreft laundry detergent and see if this helps. Try acne products, Cortaid (hydrocortisone) and have your boyfriend keep skin clean also.