CREATE TABLE table_57277 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

When the Away team is essendon, what's the Home team score?
SELECT "Home team score" FROM table_57277 WHERE "Away team" = 'essendon'
SELECT "Home team score" FROM "table_57277" WHERE "Away team" = 'essendon'