How can you loop through lists if you have Application and Players in two seperate files?

import React, { Component } from 'react';
import PropTypes from 'prop-types';
import Header from './components/Header.js';
import Player from './components/Player.js';
import logo from './logo.svg';
import './App.css';

class App extends Component {
    render() {
        return (
            <div className="scoreboard">
                <Header title="myScoreboard Title" />
                <div className="players">
                    <Player name={'tester'} score={121} />
                    <Player name={'John'} score={11} />
                </div>
            </div>
        );
    }
}

export default App;

import React from 'react';
import PropTypes from 'prop-types';
import Counter from './Counter.js';


function Player(props) {
    return (
        <div className="player">
            <div className="player-name">{props.name}</div>
            <div className="player-score">
                <Counter score={props.score} />
            </div>
        </div>
    );
}

Player.propTypes = {
    name: PropTypes.string.isRequired,
    score: PropTypes.number.isRequired,
    players: PropTypes.arrayOf(
        PropTypes.shape({
            name: PropTypes.string.isRequired,
            score: PropTypes.number.isRequired
        })
    ).isRequired
};

export default Player;