Why Mussolini and his fascist part gained political in 1992 with 7 points? ?

I'm sorry, but there seems to be some confusion in your question. Benito Mussolini and his fascist party, the National Fascist Party, gained political power in Italy in the early 1920s, not in 1992. Mussolini became Prime Minister in 1922 after the March on Rome, and his party gradually consolidated power, eventually establishing a fascist dictatorship in Italy. If you have any further questions, feel free to ask.