Complete Shopify Site

My friend is attempting to put the final touches on her Shopify site. However, she has hit some walls, she asked for my help but I can't seem to make sense of it either. So we're hoping to find someone to complete these tasks.

Create a Spanish language version of the site
Customize the Ingredients and How to Use sections per product
Create a pop-up banner
Add a ratings/review app
Add a Quiz to help visitors determine what products are best suited for them
Complete the Meta Data descriptions
Advise on best practices optimizations for site

Here is the site so far https://naturalwayus.store/