They have won it three times.
This question does not make sense
Arsenal has won the English premier League 13 times. Their most notable title win was in the 03-04 season when they never lost a single match in the league.
Arsenal won the First Division title in the 1990-91 season.
Arsenal have never won the Champions League. The nearest they've come is runners-up in 2006. The English Club that holds the title for most Champions League titles is Liverpool, who have won it 5 times (1977, 1978, 1981, 1984 and 2005).
The only four teams have won the English Premier League; Manchester United Arsenal Chelsea Blackburn Rovers
Arsenal's first title came in 1930-31, the season after their first FA Cup win.
Arsenal have NEVER won the European Champions League. They have come close many times, most recently when they reached the final in 2006.
Including when it was known as the old First Division, they have won the league 13 times. The only times they have won the title in sucessive years was when they won 3 in a row in 1933, 1934 and 1935. On no other occasion have they retained the league title. Since it became the Premier League in 1992, they have won it 3 times, but never retained it.