You can export a scene from Maya to the Unity game engine using the option, but unlike the Send To options for Autodesk products, you must first define a project.
To export the scene to your Unity project
(You need to set the project only once. It's not necessary to set the project again for subsequent export operations.)
Maya exports the selected objects or the entire scene to your Unity project. If you have the project open in Unity, you can access the FBX file immediately. To see it in your Unity scene, drag and drop the file from the Assets folder in the Project Browser into the Scene view.