If in Poland there is a fine for an accident, can I go to Ukraine and pay there?

Only a court can restrict a person's right to freely travel abroad if the person has an unpaid debt. Also, the mere fact of having a debt is not a reason for applying restrictions. Even the presence of a court decision, which has entered into force, according to which a certain amount is charged from a person, is not such a basis. The reason for banning travel abroad in this case is the evasion of the person who owes the debt from the execution of the court decision in the case of collection of this debt.