He was the son of Raynah (Feltheim) and Zalmen Scopp. He was of Belarusian Jewish heritage.
He played the character role of bookseller Avram in the 1971 film Fiddler on the Roof, which won three Academy Awards and was nominated in seven more categories in 1972.
Scopp was a Canadian actor who worked mostly in television series, including as a voice actor.
He began a career in radio during World War II, working for the local station CBG (AM).
During World War II, he was part of the Royal Canadian Air Force in Newfoundland.
In theatre, he worked in different Toronto productions, as well as working for National Film Board of Canada.
He was part of the voice cast for the 1964 Christmas special Rudolph the Red-Nosed Reindeer. Scopp was the longest-lived and one of the last surviving cast members of the special.
He attended Lorne Greene Academy of Radio Arts after the war, along with Leslie Nielsen, Gordie Tapp and Fred Davis.
He provided the voice of Socrates the Strawman in the 1960s animated television series Tales of the Wizard of Oz (1961) as well as the TV film Return to Oz (1964).
As a child, he and his family emigrated to Montreal, Canada.