A polite way to request someone to do something for you; 'Could you please', 'Would you please', 'Won't you'.
Long explanation:
The ~てくれませんか grammar point is used to ask someone politely to do something for you. It is formed by using the て-form of a verb followed by くれませんか. It translates to 'Could you please', 'Would you please', or 'Won't you' in English.