This question is not very specific.
Camera is a
Spatial node, so moving it works the same as any other 3D node. Do you know how to move Spatial nodes?
You move a 3D node by manipulating its
transform.origin is the object's position in 3D space, and
transform.basis represents its rotation.
Alternatively, you can parent the camera to another object, and it will move along with that object. The specifics really depend on how you want to move it.