Please help me understand this sentence. What does" draw"mean here? and what does the word"two"mean?

"To draw" can mean to pull something out of something else. In this case, it refers to patrons gettting a ticket with a number on it, and in the course of the evening's entertainment, one ticket from a set matching those tickets already given out will be drawn (pulled) from a container. The person who holds the ticket with the matching number wins the prize. This is more than likely from a source other than the United States, because Americans would more likely say "a drawing" rather than "a draw."

"Two" means that the prize is to provide champagne and dinner for two people. The usual assumption would be that the winner would invite a guest to join him or her for dinner.

A contest awarding a prize where there's a drawing (contest administrators pick their number from a container with many numbered tickets) for the limo ride, etc.

To people win the drawing's prize so that it costs them no money (except for the tip).

a lottery, a sweepstake

two people (together)