Install the font first before use.
How to install font
windows :
https://www.fontspring.com/support/installing/how-do-i-install-fonts-on-my-windows-pc
mac :
https://www.fontspring.com/support/installing/how-do-i-install-fonts-on-my-mac

THIS IS FREE VERSION - ONLY FREE FOR PERSONAL USE. 

If you want full license or for commercial use. Including all alternates, multilanguage, or full glyps, please contact saridezra@gmail.com.

FOR FULL GLYPS AND COMMERCIAL PURPOSE:
http://saridezra.com/product/katherine-script-premade-logo/

You can also buy it on Creative Market:
https://crmrkt.com/pvwr14

Thank You,
Sarid Ezra - www.saridezra.com