... will I have three fines?
According to Part 2 of Article 210 of the Code of Administrative Offenses of Ukraine, repeated violations during the year (in your case, violations of the rules of military registration), for which a person has already been subject to an administrative fine, as well as the commission of such a violation during a special period -
entail the imposition of a fine from fifty to one hundred tax-free minimum incomes of citizens.
For a more accurate answer and solution to the problem, you need to find out what exactly in your situation means a violation of the rules of military registration.