Required software development,Website Development freelancer for Wix eCommerce Website finishing touches job

We've semi-completed a Wix eCommerce Website; our Pics have been loaded, 50 basic Product Descriptions (& prices) & 2 or 3 Blog Posts.
The Home Page appears to have been ‘published' but, 3 weeks later, still can't be ‘found' on Google. In any event, the ‘Shop' pages aren't operational

Within the Website we need
Home Page Buttons to open the Shop
An invitation for visitors to ‘join'
Separate Shop Pages for each of the 4 ‘collections'
The addition of Shipping info (‘free on orders over $A100 within Oz' &
otherwise ‘Standard Australia Post rates apply')
Payment Gateway
Suggestions for General Improvements

Also
Review SEO Maximisation attempts
Review Security Cert
Cordination with second Domain which we've purchased

Skills & Expertise Required

software development Website Development