Here is the series of catecheses on God, the Father by Pope John Paul II. This is the first part of John Paul II’s Catechesis on the Creed. This series follows John Paul II’s Theology of the Body and precedes his Catechesis on Jesus. It began on January 9, 1985, and concluded on August 20, 1986, and it includes 64 general audiences.
These audiences formerly were available in book form from Pauline Books & Media, however, the book is now out of print. You might be able to find it on Amazon.com or other such places where used books are available.
The Vatican website has an easy-to-miss, special section which includes 63 of these 64 General Audiences on God, the Father. These audiences are not available in English on the regular part of Vatican website (under John Paul II’s Audiences).