Check another user’s balance

With the bot and code I have right now, users can check their own balance but not each others. How can I go about modifying this?

module.exports = {
    name: "rep",
    description: "Checks the user reputation",
    execute(client, message, args, Discord, profileData, cmd){
        message.channel.send(`${message.author.username}, you currently have ${profileData.reputation} reputation, keep training!`);
    }
}

Thanks.