CREATE TABLE table_57507 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What is richmond's scores when they are the home team?
SELECT "Home team score" FROM table_57507 WHERE "Home team" = 'richmond'
SELECT "Home team score" FROM "table_57507" WHERE "Home team" = 'richmond'