The short answer is no. SSRN is a platform for pre-prints. There are numerous pre-print servers (for an idea see for example https://asapbio.org/preprint-servers Warning: not everything mentioned there is still valid). Recently SSRN received some additional credits compared to other pre-print platforms. According to https://www.elsevier.com/about/press-releases/science-and-technology/elseviers-scopus-expands-to-include-ssrn-preprints it states and I quote “preprints from SSRN, its world-leading early stage research and preprint platform, are now available through Scopus, Elsevier’s abstract and citation database.” Furthermore, they indicate: “Preprints in Scopus are only available in author profiles that already have a peer-reviewed publication history.”
Last but not least: “Preprints are increasingly becoming an integral part of the research landscape. As well as providing a valuable early opportunity to understand the direction research is heading, preprints are a positive way for early career researchers to receive feedback ahead of submitting articles to journals.”
In other words, a SSRN preprint is and remains a preprint that is not equal to a peer-reviewed paper in a for example Scopus indexed journal.