A good and tricky question: official pwcorr does not store these results, Stata compnay have their "good"  reasons and there are a lot of debates on this. But a user-written command can help you get it.

ssc install matpwcorr, replace
sysuse auto, clear
matpwcorr price headroom,gen       //the new generated variable "corr" and "pv" should be what you want

连老师的pwocrr_a，你sourceview一下viewsource pwcorr_a.ado，看看能搞明白不。