How to add Schema Markup

[sofa-bed-futon]

Hey! 

I would like to know how to create schema markup and add it to the (collection) liquid. I am looking for a markup that will boost my SEO. 

My website: https://sofa-bed-futon.com/

This is how I created it: https://technicalseo.com/tools/schema-markup-generator/

Using Dawn Theme 11.0

Thanks!