How many symphonys did Johann Sebastian Bach?

Johann Sebastian Bach did not compose any symphonies. The symphony as a musical form did not exist during Bach's lifetime, which spanned from 1685 to 1750. The symphony emerged as a distinct genre in the mid-18th century, primarily associated with composers such as Franz Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven. Bach primarily composed works in other forms, including concertos, cantatas, and preludes and fugues.