Compute!’s Gazette (May 1990) ran a news piece on this possible baseball game from arcade specialists Data East.
Bo was a superstar in the US, famous for playing both American Football and Major League baseball during his career as well as a famous Nike advert.
However, there does not seem to be a trace of the Commodore 64 game online.
There was a 1991 NES title called Bo Jackson Baseball, and a later Gameboy game featuring both baseball and American Football. From the description of downloading stats this is definitely a computer game and not just a console game.
But does anything still exist?