My husband has white lump on top of his ear one doctor said looks like skin cancer another dr said it nothing should we get another opinion?

Ear: It is a very common site for skin cancer, usually not the rapidly lethal kind, but should be excised soon. I would go with the first doctor and not take a vote.

Biopsy it: "When in doubt, cut it out!" If there is a question about a skin lesion, the safest approach is to perform a simple skin biopsy to get the answer. These are performed under local anesthesia with minimal scarring.