How can React access the value of a state?

In React, you can access a component’s state property using this.state. For example:

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      count: 0
    };
  }

  render() {
    return (
      <div>
        <p>Count: {this.state.count}</p>
        <button onClick={this.handleClick}>Increase</button>
      </div>
    );
  }

  handleClick = () => {
    this.setState(prevState => ({
      count: prevState.count + 1
    }));
  }
}

In the example above, this.state.count is used to access the value of the count property in the state and render it in the render method. When the button is clicked, the value of count is updated using the this.setState method.