I think of Judgement like Judgment Day — in a literal, religious sense. If tomorrow were Judgment Day, it becomes a moment of reflection: what would you regret, and how have your past actions led you to this point?
Judgement (XX Tarot Card) carries that sense of final reckoning and accountability for the full arc of a situation or life chapter.
Justice (VIII Tarot Card), for me, is more about balance and virtue in the present moment — restoring equilibrium, righting wrongs, and asking how to act correctly now. It can also reflect the idea that acting justly is what brings you to your current position.
I can see why they get confused, because both deal with consequences of actions and we often use the words interchangeably in everyday language. But they aren’t the same idea: Judgement can exist without justice (for example, unfair criticism or punishment), and justice can exist without any kind of final, higher “judgment” being involved.