Click on Create Project to create a new Google Apps Project (refer to image below).
Enter your Project name under the Project Name field.Next,Click on create button.
Now, again click on Select a Project (highlighted in the image below) and select the newly created Project by clicking on the project name that you entered in the previous step.
Go to Navigation Menu APIs & Services Oauth consent screen.
Select External as an User type with a Google Account.
After In OAuth consent screen tab Enter Application name and add your site’s domain name to the Authorized domains section.(from your miniOrange social login plugin) You should also fill out the basic contact information:
Click on Credentials then Click on Create credentials button and then select OAuth Client ID from the options provided.
Select Web Application the options below Application Type.
Enter the Application name and enter the Redirect/Callback URI from miniOrange social login plugin under the Authorized redirect URIs field.
Click on the Create button to save your configurations.
Copy your Client ID and Client Secret and save it in your miniOrange social login plugin. (under client id and client secret field respectively).
Step 2: Set credentials in miniOrange Social Login Plugin
Copy the Client Id and Client Secret form above setup and Paste them into the fields in Instructions.
Then click on Save & Test Configuration button.
Custom app will set properly when Test configuration get successful
Below Video for Configure Google Social Login In WordPress.