como baixar arquivo ppvt no R studio para exportar em excel?

Attaching package: ‘janitor’

The following objects are masked from ‘package:stats’:

chisq.test, fisher.test

What is a ppvt file? I'm not familiar with that.

The R message you posted

Attaching package: ‘janitor’

The following objects are masked from ‘package:stats’:

chisq.test, fisher.test

is perfectly normal. It means the two functions stats::chisq.test() and stats::fisher.test() can only be used if you specify the stats package. Otherwise, functions with the same name from the janitor package will be used.