Welcome to the Pprune Wannabee forum.
Whilst we are delighted to help people get started in this industry I'm afraid your post would indicate that you really haven't done much research by reading through the threads in this forum.
A couple of hours spent doing that will show you that there really is no upper age limit in commercial aviation and that it is more a question of being correctly qualified before you apply to an airline.
I have closed the thread but PM me if you still have questions when you have completed your reseach.
Good luck
HWB