Hey, I am new to this universe and I was wondering if I could take a scene made by someone else in Babylon into Maya to change it or something.
It depends of the 3D file format used. For example, glTF files can be imported by default into Blender.
You should look into serialization. That is a process of writing a scene to a file. You should write the file as gltf, since this is the only type these programs will import.