Hello Aspirant

Don't worry about that.

While filling the application form, you must have entered a mobile phone number and your email id.

After final submission of form, you must have received a email and a message too including your application form number.

You can go through that email and you will definitely find your application number there.

Also you can login to portal with your email id to know your application number.

Hope this information would be helpful for you.

All the best