how can can move my contacts from nokia c7 to Iphone 5s

You would have to ask Nokia how you can export your contacts. You might also ask your carrier. Some carriers can do this for you.

If you want to know how to transfer contacts from Nokia to iPhone. A computer is necessary.

First, you should connect your Nokia to the computer and then transfer your contacts to the computer. Then connect your iPhone to the computer, transfer contacts from computer to your iPhone.