it totally depends on condition. there are advocates of the famous older Chris Crafts, and there are CC clubs. if it will start, the engines are worth something. i've been looking for a CC, but shipping would kill it. post a picture of it, and what it has. we will come up with a rough figure.
Without any more information than you're provided, it's impossible to say. What model is it? What's the length overall...beam...what type of boat is it? What condition is the hull in?
Some Chris Craft models are quite valuable. Others...not so much. If it's in terrible condition, it will cost a great deal to restore.
It all depends on so many things.
Perhaps you can send some photos or, at least, more information.