Here are some steps for you -
1. Sign in to Google Analytics account.
2. Click on Admin.
3. Select Property drop down >> Create new property.
4. Select Mobile App.
5. Setup the SDK for which you are going to install the Google analytics, like iOS or Android.
6. Follow the same steps mentioned in the step 1 to 4.
7. Select the website.
8. Select the website name.
9. Enter the website URL.
10. Click on Get racking ID.
11. From the view column, click on Create new view from the drop down.
12. Select the mobile App.
13. Provide the reporting view name and create the view.
That's it!