We use SCORM in Moodle platform. The answer to your question will be very useful for teachers trying to develop E-learning or blended learning without LMS administrators. Google suite is a good tool but I did not find a way to implement the content used in Moodle.
There has been always a debate regarding the real value of content to be SCORM compliance. During the LMS era in the early days of the emergence of e-learning before web 2.0, The SCORM was essential as a standard host of e-learning content. however, the evolution of social learning, web 2.0 and youtube has significantly eliminated the value of SCORM since learning authors can independently publish their works without the need for SCORM conversion. google classroom concept is built on the direct contribution of teachers without the need for a content designer and e-learning authors, so here is the point why google classroom doesn't import SCORM packages. you may unpackage the Scorm content and use each single Sharable Content Object (SCO) in google classroom.
En pleno 2020 y en la pandemia esta pregunta sigue siendo importante peo parece ser que la respuesta es que no se puede. Pero existen nuevos complementos que pueden ayudar a hacer casi lo mismo. por ejemplo bookwidgets