If you dream that you are ugly, you may be worried about what other people think of you in waking life.
If you have recurring dreams about being ugly, you may have very low self esteem.
If you dream that someone you know is ugly it could be that you are not happy with some aspect of their current behavior.
If you meet an ugly person in a dream that you don’t know in waking life, that person usually reflects a part of yourself you should address and get rid of.