He has been called "one of Malta's foremost sculptors of the Modern Period" by the studio of Renzo Piano.
He was one of the first students to enroll in the newly established School of Art in 1925, where he studied sculpture under Antonio Micallef.
In 1927, he won a scholarship to the British Academy of Arts in Rome, studying under the renowned Maltese sculptor Antonio Sciortino.
[3] His last major work was a bust of Guido de Marco which was completed when he was 89 years old.
[5] Apap married Maria Bencini in 1941, and they had three children: John, Nella and Manon.