Hey!

You have not mentioned as to in which university exam, state exam or any other exam in which you have applied. Anyhow, in case you have completed your application process, you must have gotten a mail and from there you can access your details required like application number. You can search for the mail in your inbox. Also, please check whether you got a confirmation mail or message. If you got the confirmation mail it means that you can get your application number from there and other required details. You may write the name of the exam or the conducting body in case you require more details.