How does he look like? 错.
应该： What does he look like?
How does he look?对.
What's he looks like? 错.
What's his look like?（look名词）
What is he like?对.
What do you think of his appearence? 拼写错误是失误,句型是对的.“你对他的外貌是怎么看的?”实际就是让对方描述那人的长相.