1.
Examine, review. For example, They went over the contract with great care, or I think we should go over the whole business again. This term originated in the late 1500s, then meaning "consider in sequence."
2.
Gain acceptance or approval, succeed, as in I hope the play goes over. This term is sometimes elaborated to
go over big or
go over with a bang for a big success, and
go over like a lead balloon for a dismal failure. [Early 1900s]
3.
Rehearse, as in Let's go over these lines one more time. [Second half of 1700s]