Hello Applemegroup1,
It sounds as though you’re wanting to locate the Wallet application and verify that there are no unexpected charges associated to the app. Apple Support Communities is a great place for help!
From the description you provided it sounds as though you may have removed the application from the Home screen of your iPhone. You can still locate the app in App Library. You can find steps on how to use App Library and organize your iPhone in the following article.
Organize the Home Screen and App Library on your iPhone
For information on how to use the Wallet and how charges are made check out the article below.
How to use Wallet on your iPhone, iPod touch, and Apple Watch
In reference to the charges you saw you may find help with identifying those, and how to request a refund in If you see ‘apple.com/bill' on your billing statement.
Have a great day!