Give the maximum price and score for wines produced in the appelation St. Helena.
return wines ;return appelations of #1 ;return #1 where #2 is  St. Helena ;return prices of #3 ;return maximum of #4 ;return scores of #3 ;return #5 ,  #6
['select', 'project', 'comparative', 'project', 'aggregate', 'project', 'union']