Ok so I am on Facebook and I ask out my crush she says she doesn't know now I probs need to give her time but shell say no eventually I need to get her asap please please please help

Start by not being so desperate.

And if she says no, no means no. Move on to another.

The only help we can give you is to try and keep you from looking like an idiot to her by being so desperate. If she said no, then it's over. Forget about her.

Why do you need to have her so desperately?
She has said no, accept it and move on.

Hope you have a plan B. Plan A might not work.

May I ask how old you both are?

You asked her out, she said she doesn't know. That sounds like she is giving it some thought but may need a date and time to see if her schedule allows it or (if she is under 18) her parents will allow her to go out. You seem to understand that part.

Then you go on to say that she will eventually say 'no'. This sounds like you are already expecting the worst and not giving her a chance to speak her own mind.

If you have already decided that she is going to say 'no' for what ever reason, then you need to stop trying to ask her out and look at building up your own confidence and ability to communicate. Get involved in activities that have you interacting with other people. Learn how to talk to people without putting your thoughts in their mouths.

She may say a definite 'no' or she may say that she needs to ask permission or look at her schedule or she may say 'yes'. But you won't know if you don't listen to her. If she says 'no' or seems to be trying to find a nice way to say 'get lost', then you move on.

Crushes come and go, especially if you do not let them consume your thoughts.