Welcome to Android Forums, Foxysmom!
I go to settings and it shows the app installed
Okay, when you're in settings and see the app listed, press on the app to see its info, then scroll down to the bottom; you should see something like this [down at the bottom]:
Does your app show that it was installed from the Play Store? If so, then press on that sentence and it should take you to its Play Store page.
Does it? If so, there should be an 'open' choice; that's one way of running it. But not ideal!
As my buddy
@Dannydet said, look for it in your app drawer--HOWEVER, if you're using a third-party launcher [as most of us do], it's possible that its icon has either deliberately been hidden or it's simply not where you're looking for it. (That may apply to a stock launcher, too; I wouldn't know.)
So...go through the above steps and post your results. If you follow its link [via settings] and it does not take you to its Play Store page, it should give you an error message, like 'not found.' It may have been removed for some reason. But that doesn't mean you can't use it, as long as it's on your phone, and we know it is. It's just a matter of putting its icon in your app drawer.