Please how to save what visitor choice

Hi Webflow has a beautifull video about donuts.

I want to make it with my students.
But how to save the ‘like = heartcolor red’ for the selected donut…
Can anyone tell me how to create a webstore to save the ‘red heart’

look to the example
of the teacher: http://karelrosseel-valentijn.webflow.io/
preview normal site: https://preview.webflow.com/preview/karelrosseel-valentijn?utm_source=karelrosseel-valentijn&preview=c1a69b62e9be914e4ce29f8da17a629d
preview webshop => how to create?
https://preview.webflow.com/preview/karelrosseel-webshop-valentijn?utm_source=karelrosseel-webshop-valentijn&preview=ad0dc6f97a876720e209dc1d17478f65

result of the student: Fannyvanobbergen-valentijn