Flutter App Configuration for E-commerce Website

Hello dear Freelancer,
I have An Online and Live E-commerce CMS (Name: Active Ecommerce Cms)
Recently I have Purchase Flutter App Script for this web server(Active Ecommerce Cms) from same Author.
I want to configuration the Flutter app project for release Apk file.
I will Provode full gudeline.
Requirement :
See The attachment file for configuration all my requirement.
*Change logo and Icon - i will give you when we agree
* Make color combination same as web server
Thank you