Please note that ResearchGate is neither a journal nor a publisher, you cannot "publish" here. It is a platform for papers published in journals, or to present unpublished texts, data etc. See also "Is ResearchGate a publisher?" in https://help.researchgate.net/hc/en-us/articles/14292596164753. Therefore, posting at ResearchGate is not regarded a publication. You have to find a journal in your field of science that is listed in Scopus.
Scopus is a database comprised different journals from different fields. You need to choose a journal relevant to your article/topic and publish there. You can create a profile on ResearchGate and share your publications detail. ResearchGate is a networking platform where you an connect scholars from any field.