Choose a theme, add your products, add your information, choose your payment and delivery methods and that's it, your e-commerce is online!
Oh yes, I almost forgot, with Shopify, don't forget that for each sale, a commission of 0.5% to 2% is taken by the platform. In addition to the monthly subscription.
Today Shopify is used a lot to create e-commerce because the tool is simple and it has a lot of templates ready to use. But, it is still a tool that requires technical knowledge for the site to be optimized and well referenced.