The movie was set in like the Victorian times had a girl go to a home to live and the scene that stayed with me was they were an costume party and this guy dressed as a jester type costume and a girl dressed as a guy and he bends her over thinking he is a guy and wam bam.. What is the title of the movie been looking for it

That sounds like the plot to the 1977 movie Young Lady Chatterley. It starred Harlee McBride.

Hope that helps!