How to find Google account Client ID and Client Secret key?

Follow below mentioned steps to get your Google Client ID and Secret Key:

Step 1 : Go to Google Developer portal

Step 2 : If you have a Google account, login, else Create an Account

Step 7 : Search for Google Play Android Developer API here. You can even scroll down to Mobile section.
Step 8 :Click on Google Play Android Developer API

Step 9 : Click on Enable to activate the key

Step 10: Click on Credentials

Step 11 : Click on Create Credentials

Step 12 : Click on OAuth client ID

Step 13 : Go to OAuth Consent Screen

Step 14 : Select User type Internal
Step 15 : Click on create

Step 16 : Enter Application Name and select User support email. Next, enter the Authorized Domain and Developer Email address. In the Authorized Domains field, enter the URL - appypie.com. Once done, click on Save and Continue.

Step 17 : Click on save and continue
Step 18 : Click on credentials
Step 19 : Click on Create credentials

Step 20 : Click on OAuth Client ID

Step 21 : Select Application Type by click on dropdown menu
Step 22 : Click on web application

Step 23 : Click on Add URI 
Step 24 : Provide Authorized JavaScript Origins and Authorized Redirect URLs.In the Authorized JavaScript origins field, enter the URL - https://snappy.appypie.com and in Authorized redirect URLs  field ,enter the URL -  https://snappy.appypie.com/app/iap-token . Once done, click on Create to continue

Step 25 : Click on create

Step 26 : Here is your Client ID and Secret Key.Copy themStep 27 : Paste the copied keys in the respective fields on the creator software and click on connect.

Now to link your Google Cloud project :

Step 28 : Go to Google Play Console

Step 29 : If you have a Google Developer account, login, else Signup.

Step 30 : Click on Settings.

Step 31 : Click on API Access under Developer Account.
Step 32 : Select Link existing project or create new project.

  Step 33 : Click on the Project dropdown menu.

Step 34 : Select the project to be linked.

Step 35 :  Once you have selected the project, click on Link Project.

Step 36 : Here you will see the project has been linked. You can also unlink the project.