If it has same key number.
Go to store that sells locks and you will find ones that are keyed alike, maybe a box of 6 or more.
But chances of you getting a same key randomly is astronomical. If you have key no written down just buy another one.
No, every key is different.
Otherwise, anyone could go buy a lock, get the key, and use it to open all the locks of that brand. That would defeat the purpose of having a lock for security.
I bought a lock and I lost the key if I buy another lock the same brand will the key be the same as my old lock key?