Why catalyst does not increase the amount of product?

A catalyst increases the rate of a chemical reaction by lowering the activation energy required for the reaction to occur, but it does not change the equilibrium position or the overall amount of product formed. The catalyst facilitates the conversion of reactants to products more efficiently, but it does not affect the concentrations of reactants and products at equilibrium. Thus, while a catalyst speeds up the attainment of equilibrium, it does not increase the total yield of the product.