Student or Learner
Once i was asked to get a ticket number but i don't know where to get the ticket number. So I want to know which of the below two questions will be more appropriate to ask where i will get the ticket number.
1. Where will I get the ticket number?
2. Where can I get the ticket number?
Note my corrections to your post. It's important to capitalise the word "I" every time you write/type it.
Sentence 1 is grammatically OK but it would sound a little unnatural in the context you gave. Use either sentence 2 or "Where do/should I get a ticket number?"
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.