The united nations uses its organized military force to invade nations guilty of human rights violations true or false?

False.
For one, the United Nations does not have a standing military force. It relies on volunteers from member states for its peacekeeping missions.

It also does not invade nations on the grounds of human rights violations, and generally The Security Council, and security arm of the UN, will not invade a nation on any grounds. The only cases in which the UN actually participated in a conflict on the side of one of the belligerents are the Korean War in the 1950s and the Gulf War in the 1990s.