How to change font in kirby

How can I change font in kirby can someone show me…

Do you mean in the Starterkit? The fonts in the Starterkit are included via a @font-face rule in the /assets/css/index.css stylesheet. The fonts themselves are located in /assets/fonts/, so no Google Fonts or whatever used here.

But this is nothing Kirby specific. You might as well include fonts from Google Fonts or any other cloud based provider.

So, what you have to do depends on whether you want to use fonts you host yourself on the server or cloud based fonts.