If by "Socialism" you mean "electing a social-democratic government" then it certainly can lead to fascism. Look at Chile. Allende was elected on social-democratic ticket, the CIA and the Chilean military overthrew his governmet, 3,000 plus people were murdered by the fascists. Same thing happened in Spain in 1936; republican government overthrown by the army backed by Nazi Germany and Fascist Italy, leading to Franco's dictatorship. Fascist? It's a point one can quibble over. Authoritarian capitalist military dictatorship? Certainly.
On the other hand, I think Allende was a scumbag and a crook. I'm not glad he was murdered, and I'm certainly not glad thousands of others were murdered by the US and its fascist allies, but it wasn't all nice before Pinochet took over.
It doesn't lead to communism though, communism can only be brought about by a revolution. History has repeatedly demonstrated since 1870 that communism (or socialism) cannot be elected into power. "Socialist governments" are capitalist governments, because "socialist government" cannot exist. Socialism, as the end of states and classes, can only be brought about worldwide, without governments, countries or any other that unneccessary crap that retards the progress of the human race.
Even when communists have come to power, a capitalist dictatorship has rapidly re-asserted itself, such as Russia. Communism in one country is a nonsense - this is just "National Socialism" ie not socialism at all, it's national or state capitalism.
Communism and capitalism cannot exist at the same time. Communism (or socialism) can only exist once capitalism has been abolished. The disagreement between "communists" and "socialists" is effectively one of tactics; communists believe in the necessity of revolution, socialists belive that it is possible to conquer capitalism by seizing state power through elections. Both (claim to) seek to bring about a classless communal society.
And I'd like to say, the poor do deserve the money the rich have, as the rich made their money by ripping off the poor. Wealth distribution is a zero-sum game. One person has a lot because very many have nothing.
"Well it's Forty-one Thousand Nine Hundred Sixty-nine OK -
Gotta war across the Milky Way - "
Iggius Popiscus and the Stoogii, "41,969"