How can a Ukrainian citizen residing in Poland on the basis of a special act or temporary protection open a bank account?
Each bank sets its own rules related to the way of opening bank accounts. Due to the situation in Ukraine, some banks accept any identity document when creating a bank account (foreign passport, internal passport, ID card, residence card, temporary identity certificate of a foreigner). However, these requirements may change over time from bank to bank. It is worth asking the bank where the person plans to open an account. In this article, you can find more information on the document requirements of individual banks:
https://www.najlepszekonto.pl/konto-osobiste-dla-obywatela-ukrainy