finite field with pm elements and R`,m = Fpm [v1, v2, . . . , v`]/(vi2 - 1, vivj - vjvii1 <= i,j <=`. Thus R`,m is a finite commutative non-chain ring of order p2Em with characteristic p. In this paper, we aim to construct quantum codes from skew constacyclic codes over R`,m. First, we discuss the structures of skew constacyclic codes and determine their Euclidean dual codes. Then a relation between these codes and their Euclidean duals has been obtained. Finally, with the help of a duality-preserving Gray map and the CSS construction, many MDS and better non-binary quantum codes are obtained as compared to the best-known quantum codes available in the literature.