TypeError: 'float' object is not callable #1

[Yoriz]

fl_time(self, t_func, apply_to=None, keep_duration=False)
Returns a Clip instance playing the content of the current clip but with a modified timeline, time t being replaced by another time t_func(t).

Parameters
t_func:
A function t-> new_t

The method fl_time of VideoFileClip states that the parameter it receives is a function.
your line

clip2 = clip2.fl_time( tiempo(tiem,tiempo_ralentizado,lugar_ralentizado,Framerate,arco_ralen) ).set_duration(40)

is passing the result of a function, not an actual function itself.