How long should I wait already called her once for a date?

Need more information. Did you actually speak to her or just left a message? If you spoke to her what did she say?

Once a date is set, I usually just call and make small talk. I ask her simple questions, "Have you ever seen the grand canyon? I was there 2 1/2 years ago. It is a BIG hole in the ground. Pretty awesome." If she responds, I'll ask her if she has time to talk and can I call her. If she says yes. I call and ask her random questions about her. Where she has traveled or lived. Does she read comic books? Does she have a hobby? Just little "nothing questions that have her talking about herself and I find out little things about her. I tell her things about me. My favorite color or number and why. My hobbies and super hero. Just things to make her comfortable with me. Learn to be a conversationalist with women, they like a guy who can talk with them.

You need to provide us with more information friend...