2. Create an App ID

Connect to the Apple developer website with your Apple Developer account
Select "Certificates, Identifiers & Profiles"
Select "App ID" on the left menu under "identifiers"
Click on the "+" to add an new iOS App ID
In the "App ID Description" field type the name of your App
Leave the "App ID prefix" as default usually set as Team ID
Select "Explicit App Id" and enter your Bundle ID. Apple recommends using a reverse-domain name (For Example: com.domainname.appname)
For the App service part of the form leave it as is
Click on Continue and should see your App ID in the list