@dp.message_handler(text='huy') # первый хендлер
async def sdfsdf(message: types.Message, state: FSMContext):
    randomSource = string.ascii_letters + string.digits
    psw = ""
    n = random.randint(12, 32)
    for i in range(n):
        psw += random.choice(randomSource)

    await state.update_data(psw=psw)
    await state.finish()

@dp.message_handler(text='huy2') # хендлер два
async def fdgf(message: types.Message, state: FSMContext):
    data = await state.get_data()
    psw = data.get('psw')
    print(psw) # None`