Moses continues describing God's curses if the people disobey him. He speaks to the Israelites as if they were one man, so the words "you" and "your" here are singular. (See: [[rc://en/ta/man/translate/figs-you]])
You may need to make explicit that the fruit drops before it is ripe. Alternate translation: "your olive trees will drop their fruit before the fruit is ripe" or "the olives will fall off your olive trees before they are ripe" (See: [[rc://en/ta/man/translate/figs-explicit]])