import bpy
import mathutils
interp = mathutils.geometry.interpolate_bezier

class DummyOp(bpy.types.Operator):
    bl_idname = "object.get_bezier"
    bl_label = "Extract Bezier Points"

    def execute(self, context):
        ob = context.object
        dat = ob.data
        bzp = dat.splines[0].bezier_points
        points=interp(bzp[0].co, bzp[0].handle_right, bzp[1].handle_left, bzp[1].co, dat.resolution_u+1)
        print(f"So far I can only extract this data:\n{dat.resolution_u},\nCurve points:")
        for p in points:
            print(p)
        return {'FINISHED'}

def register():
    bpy.utils.register_class(DummyOp)

def unregister():
    bpy.utils.unregister_class(DummyOp)

if __name__ == "__main__":
    register()

    bpy.ops.object.get_bezier()