Beauty & the Briefcase premiered with 2.346 million viewers according to this source.
In comparison to similar ABC Family movies, My Fake Fiance (same director as Beauty & the Briefcase) premiered with over 3.6 million viewers.
Labor Pains starring Lindsay Lohan had 2.1 million viewers.
Picture This starring Ashley Tisdale did a little better with 5.3 million.
So it looks like Beauty & the Briefcase was about average, or maybe a little below average compared to similar movies.
If you didn't get a chance to see the movie, it is now on iTunes.