Has an Olympic Soccer (Men) game ever ended 7-1?
It has. 7-1 has been a Olympic Soccer (Men) final 6 times in 156 games. The first was Egypt beat Turkey on May 28, 1928; the latest was Italy beat Spain on June 4, 1928.
That makes 7-1 the 8th most common final score out of 27 that have ever occurred in Olympic Soccer (Men). One point away, 8-1 has happened 2 times and 7-2 has happened never. Nearly all of its occurrences fall between 1920 and 1949.