You can try to fix it but you will still be able to see it, it's not going to fix it 100%. If your looking for a quick cheep fix repair your existing windshield but in order to have a clean clear windshield replace it with s new one.
if you just have small pits in the glass there are shops that can fill those in. if a crack is longer than 4 inches you'd have to get the windshield replaced though