There are 2 code folders inside the package:

1. The Folder named Code_Folder_For_OC3.0.0_to_OC3.0.3.3 
Please Install this folder for OpenCart 3.0 to 3.0.3.3

2. The Folder named Code_Folder_For_OC3.0.3.6 
Please Install this folder for OpenCart 3.0.3.6 

The common Requirements:

Recommend PHP 7.2 and PHP 7.3
