CREATE TABLE table_33530 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the home team score when essendon was the away team?
SELECT "Home team score" FROM table_33530 WHERE "Away team" = 'essendon'
SELECT "Home team score" FROM "table_33530" WHERE "Away team" = 'essendon'