Other than the Express entry program, there is a provincial nomination program (PNP) that can provide you another immigration pathway to Canada PR Visa with a low CRS score. Many PNPs programs require a low CRS score to be eligible like SINP - Saskatchewan Immigrant Nominee Program, etc. Also, the AIPP - Atlantic Immigration Pilot Program provides another immigration pathway to Canada PR Visa with a CRS score of fewer than 400 points.