If the 2-tailed value is .0001 then what significance level why?

If the two-tailed p-value is 0.0001, you would typically reject the null hypothesis at any conventional significance level (alpha).

* Significance levels (alpha) are commonly set at 0.05, 0.01, or 0.001. A p-value of 0.0001 is smaller than all of these.

Because 0.0001 < 0.05, 0.01, and 0.001, the result is statistically significant at all these alpha levels. The finding is highly unlikely to have occurred by chance alone.