If the there's 50 players which number of players can be arranged in the shape of a square

49

To determine the number of players that can be arranged in the shape of a square, we need to find a perfect square that is less than or equal to 50.

Starting with the smallest perfect square, we have 1^2 = 1, and we keep squaring until we find a square less than or equal to 50.

2^2 = 4
3^2 = 9
4^2 = 16
5^2 = 25
6^2 = 36
7^2 = 49

As 7^2 = 49 is the largest perfect square less than or equal to 50, we can arrange a maximum of 49 players in the shape of a square.