He doesn't appear to have made a public statement about that. He was described as bisexual by biographer James H. Jones, so he was likely between 2 and 4. Kinsey himself believed that one's score...
Alfred Kinsey was born on June 23, 1894 and died on August 25, 1956. Alfred Kinsey would have been 62 years old at the time of death or 117 years old today.