Scotta started his career in 1970 with Unión de Santa Fe but after only one season he moved to Club Atlético San Lorenzo de Almagro where he was part of the Nacional winning team of 1974. In 1975 Scotta was the topscorer of the Nacional championship with 28 goals and Metropolitano champion with 32 goals, this made him the topscorer in South America and in world football for 1975. Scotta was awarded the Olimpia de Plata as the Argentine sports writer's footballer of the year. Only two players managed to score more goals than him in one season: Archie Stark and Ferenc Deák. Nevertheless, Scotta remains the footballer who scored more goals in a single year, ever.
Scotta's goalscoring achievements of 1975 attracted the attention of a number of foreign clubs, the team that managed to sign him was Grêmio in Brazil, where he helped them to win the Campeonato Gaúcho in 1977.
In 1979 Scotta returned to San Lorenzo, he then had a season with Ferro Carril Oeste in 1980, another with San Lorenzo in 1981 and a final season at the top level of Argentine football with Boca Juniors. He also played for Sevilla FC.