Is Arsenal the most successful Soccer team in England?

Arsenal was the first club from the South of England to join the Football League in 1893, and they reached the First Division in 1904. Relegated only once, in 1913, they continue the longest streak in the top division,[2] and have won the second-most top-flight matches in English football history.[3] In the 1930s, Arsenal won five League Championships and two FA Cups, and another FA Cup and two Championships after the war. In 1970–71, they won their first League and FA Cup Double. Between 1989 and 2005, they won five League titles and five FA Cups, including two more Doubles. They completed the 20th century with the highest average league position.[4] Between 1998 and 2017, Arsenal qualified for the UEFA Champions League for nineteen consecutive seasons.

Arsenal FC was the first club in the south of england to join the football league in 1893.   They have been only relegated once in 1913 and completed the 20th century with the highest average position so over time, yes, you can say they have been the most successful.