P value of Matrix

Formy project as a part of it, I have to find P value for my 7*600 matrix, Can someone guide me how can I calculate and why we need P value? What is this value suggest?

[Walter Roberson]

Matrices do not have p-values in isolation. You need a statistical test.

For example, you could form a hypothesis that the matrix is formed out of values that are independently drawn from a normal distribution with mean 0, and it would be possible to determine the p-value of that using ttest(). But a bunch of numbers by themselves mean nothing.