Top organizations will only recruit individuals who are talented enough to match their work requirements, so even if you believe you are knowledgeable about data science, a credible and globally accepted data science certification is required to demonstrate that you are formally recognized to hold the latest data science skills. https://albertchristopherr.medium.com/top-5-data-science-certifications-in-demand-by-fortune-500-firms-in-2022-362ad4e26b0f