There isn't a one-size-fits-all answer for the best project structure in React Native, as it depends on your specific requirements, the size of your project, and your personal preferences. However, there are some commonly recommended practices for structuring a React Native project. Here's an example of a simple, scalable folder structure:

my-app
├── src
│   ├── assets
│   │   ├── images
│   │   ├── fonts
│   │   └── icons
│   ├── components
│   │   ├── shared
│   │   │   ├── Button.js
│   │   │   └── Input.js
│   │   └── specific
│   │       └── UserProfile.js
│   ├── screens
│   │   ├── Home.js
│   │   ├── Profile.js
│   │   └── Settings.js
│   ├── navigation
│   │   ├── AppNavigator.js
│   │   └── AuthNavigator.js
│   ├── utils
│   │   └── helpers.js
│   ├── constants
│   │   ├── colors.js
│   │   └── styles.js
│   ├── api
│   │   └── index.js
│   └── store
│       ├── actions
│       │   └── userActions.js
│       ├── reducers
│       │   └── userReducer.js
│       └── store.js
├── App.js
├── app.json
├── package.json
└── README.md

A brief explanation of each folder:

• src: All your source code, components, assets, and logic go here.
• src/assets: This folder contains images, icons, and fonts used in your app.
• src/components: This folder contains reusable UI components. You can divide them into shared (common components like buttons or inputs) and specific (unique components for a specific feature or screen).
• src/screens: This folder contains the individual screen components of your app.
• src/navigation: This folder contains the navigation logic and navigators for your app, such as stack or tab navigators.
• src/utils: This folder contains utility functions and helpers used throughout your app.
• src/constants: This folder contains constant values, such as colors or shared styles.
• src/api: This folder contains API-related functions and configuration, such as API endpoints and fetching logic.
• src/store: This folder contains your app's state management logic, including actions, reducers, and the Redux store (if you're using Redux). Remember that this structure is just an example and can be adapted according to your project's needs. The key is to keep your project organized, modular, and maintainable.