You can easily move from Shopify to Wix without losing your pagerank or data about your products, customers, prices, ... thanks to various migration services. I highly recommend you use these services as they save time and you don't have to fear losing your data compared to migrating manually. I used to use https://www.shopping-cart-migration.com/migration-guides/how-to-migrate-your-store-from-shopify-to-wix-a-step-by-step-tutorial-for-non-techies, you can give it a try