The answer is commonly-used "Reinfeld values" of pawn=1, bishop=knight=3, rook=5, and queen=9 (kings are essentially worth an infinite number of points, because the game ends if it is lost). While this is a good guide,chess is rarely that simple

Chess is a game played between two opponents on opposite sides of a board containing 64 squares of alternating colors. Each player has 16 pieces: 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Next to the King & Queen are the Bishops, followed not by the horses but by the Knights. And finally, the pieces on the corner are called Rooks. As for the small chess men in the front row, they're the pawns always ready to advance!