To get high-definition vector icons in PNG format, you can use the @react-native-vector-icons package. Here's a brief snippet to get you started:

import { Ionicons } from '@react-native-vector-icons';

const App = () => {
  return (
    <Ionicons name="ios-star" size={50} color="#007bff" />
  );
};

In this example, we're using the Ionicons component from @react-native-vector-icons, which provides a wide range of icons. You can replace Ionicons with any other icon from the package.

Make sure to install the package by running npm install @react-native-vector-icons or yarn add @react-native-vector-icons.

If you need more control over the icon's appearance, you can use the style prop to customize its size, color, and other properties.