Myshopify is not a scam, it is legitimate. It is owned by Shopify, which is a complete e-commerce platform that lets people start, grow, and manage their businesses. In other words, it allows you to create and customize an online store. But, although Myshopify is legit, there are unscrupulous people who are using it to create fake stores used to ripoff online shoppers. The good thing is once those fraudulent stores are reported to Shopify they are removed.