urgent help required in shopify script

I am in need of urgent help with a Shopify script. Specifically, I require assistance with Zepto app configuration to display it on collection pages.

Requirements:
- Expertise in Shopify theme customization
- Experience with app integration, specifically Zepto app
- Understanding of the Shopify checkout process

Preferences:
- I trust the freelancer's expertise and have no specific requirements or preferences for the solution.

Time Frame:
- The project needs to be completed immediately.