Is the window right the way up?
Is it the window seal or the door seal?
For door seal -
An old dodge is to lower the window and bash the frame with the palm of you hand in towards the car, with the door open.
Another is to go around the tongue of metal under the rubber seal of the door frame with a soft hammer and bash it out towards the door.
After a few thousand slammings of the car door, especially the driver's one, the seals deform and require gentle readjustment.