There was no clear victor of the Cold War between Soviet Russia and the United States. This is mainly because both sides suffered defeats and gained victories. While Soviet Russia was the first to launch a human, Yuri Gagarin, into space, many of the Soviet scientists had taken ideas from U.S. scientists.
In addition to this, the Soviet Union had to endure defeat as the Berlin Wall was demolished. So, an answer to your question: there was no winner or loser.