tg

@bot.message_handler(content_types=["text"])
def cap(message):
    for i in range(5):
        th = threading.Thread(target=randomNum, args=(message.text, message.chat.id)).start()

def randomNum(message, mci):
    mes = message + '_' + str(random.randint(1, 20))
    return bot.send_message(mci, mes)