If you can't find a windshield, it's probably a "total loss." ACV (actual cash value) means replacement cost aka market value. Good reason for having speciality insurance on "agreed value" basis. As stated above, best to have the chip repaired. Many insurance companies waive the Comprehensive deductible if repaired instead of replaced. Check with your insurance company or agent.
Good luck with however you proceed. If repaired, the sooner, the better.