acts of judgment: punishments actually carried out on the guilty
This word does not name the idea of justice or a courtroom verdict. It names the punishments themselves, the concrete blows that fall on the guilty once judgment is decided. It appears almost entirely in the plural, "acts of judgment," because it pictures a series of decisive strokes rather than a single ruling.
Almost every time, God is the one carrying them out. He redeems Israel "with great acts of judgment" against Egypt, and "against all the gods of Egypt" he says, "I will execute judgments." The book of Ezekiel returns to the phrase again and again as the LORD announces punishment on Jerusalem, Moab, Sidon, and Egypt, usually adding that these acts are how people come to know who he is. Occasionally the blows fall through human hands: an invading army becomes the instrument that "executed judgment" on a faithless king.
The related noun מִשְׁפָּט is the broad word for justice, a ruling, or a legal custom. This word is narrower and more physical: it is that justice put into effect as punishment. So in Proverbs, penalties are said to be "prepared for scoffers," the fitting consequences held ready for those who mock correction.