score = (x) -> 
  if x == "Yes"
    10
  else
    0
  
weights = [0.25, 0.25, 0.25, 0.25]
scope_1_n_2_ghg_emissions = [reductions, targets, targets_reporting, alignment]

weights.reduce((weighted_sum, weight, index) -> 
              weighted_sum + weight*score(scope_1_n_2_ghg_emissions[index])
             , 0)