We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.
So we need you to do the work, and we will help you when you get stuck. That doesn't mean we will give you a step by step solution you can hand in!
Start by explaining where you are at the moment, and what the next step in the process is. Then tell us what you have tried to get that next step working, and what happened when you did.
Start by reading the question carefully, and work out for the first part what you do and don't know how to do.
For the stuff you do know, you're fine.
For the stuff you don't, break it down into simpler steps. Then repeat the process: separate what you know how to do from what you don't. Keep repeating the "simplification" process and eventually you should find the whole thing is "stuff you know how to do".
So do it. Test it, and be sure it works.
2 A console application for auctions in Pakistan.
You know how to create a new Console project in Visual studio.
So do it. Give it an appropriate name, and that bit is done.
Move on to the second bit and do the same thing.
2 • Sign up.
3 First name, last name, user name (it should be unique), CNIC, password, confirm password.
Not complicated - it's telling you what you need to store, and giving you some limits.
You need to write a method that does a sign up, and returns the info - probably in a class instance - to the caller.
You know how to write a function, so create a bare-bones function to do it.
Now start filling it in.
Keep doing it in little bits - testing thoroughly as you go - and the whole thing should work at the end.