How can I retrieve my lock combination?
Answers:
Look on the back of the lock. Many brands keep records where serial numbers and combinations are combined. You should be able to call a locksmith and they can come and verify that the lock is actually yours, and then they can get you the information.
If it isn't a tremendously sturdy lock, and it wasn't really expensive, just use bolt cutters, toss it, and buy a new one.
Other answers:
you cant! sorry ...
you cant! sorry ...
what do ya mean, for what?
Bronwen's got it. I'm sure your lock cost less than $10.00. Go buy a new one.