from aiogram import Router, types, F

router = Router(name=__name__)
@router.message(F.text == "Регистрация")
async def handle_register(message: types.Message):
    user_full_name = message.from_user.full_name
    chat_id = message.chat.id
    username = "@" + message.from_user.username
    await message.answer(text=f"Привет, {user_full_name}!\n"
                              f"Твой Чат ID: {chat_id}\n"
                              f"Твоё имя пользователя: {username}\n")