Apollo 1 was not an actual program, it was a scheduled mission as part of the Apollo Program. Apollo 1 had a scheduled launch date of February 21, 1967.

The Gemini program preceded the Apollo program

The very first flight test of any Apollo-program hardware was the Saturn SA-1 launch which occurred on Oct 27, 1961.

There were a total of 11 space mission in the Apollo program. From Apollo 7 to Apollo 17.

No, the Apollo Program was cancelled after the final moon landing (Apollo 17) in December 1972.