How many apostles did Jesus choose from His disciples?

Answer: 12

Jesus called His disciples to Him and chose twelve of them, whom He also designated as apostles.

“When daylight came, He called His disciples to Him and chose twelve of them, whom He also designated as apostles: These are the names of the twelve apostles: first Simon, called Peter, and his brother Andrew; James son of Zebedee, and his brother John;”— Luke 6:13; Matthew 10:2 (BSB)