If it isn’t too cold and the ice on the window shield isn’t too thick, you can use the windshield wiper sprayers to knock the ice clear. In my experience, this only works down to maybe 20F. Other than that, warm the car up until you have a reasonable clear area. Then maybe you can finish the job with the windshield washers.
The windshield washers will not help much with ice on the inside of the windshield.
And sometimes, you just have to scrape/chop/hack the ice off.