What does Victor dream and what does the dream grow out of?about frankenstien story

I assume that you are talking about the dreams that Victor
has at the start of Chapter 5.

Victor dreams here because
he has just finished creating the monster.  It has just come to life and this really
affects Victor.

Victor has all sorts of terrible dreams
that have to do with death.  He dreams of Elizabeth.  He dreams that he sees her walking
down the street but when he goes to kiss her, she is dead.  He dreams that she turns
into his dead mother and he sees the grave worms crawling in her
shroud.

I think that this is foreshadowing all the death
that will happen because he has created this monster.