Is it permissible to display pictures or videos of unveiled women in marketing clips, knowing that most of them are modestly dressed, and is the money earned from that considered unlawful?

It is not permissible to show unveiled women in videos due to the assistance this provides in sin and transgression, in fulfillment of the Almighty's saying: "...And do not cooperate in sin and aggression. And fear Allah; indeed, Allah is severe in penalty. {Al-Ma'idah:2}". There is no necessity or need that permits this. If necessity dictates showing a woman, her face and adornment must be blurred.