How To Configure Gmail In Outlook With 2 Step Verification?

Settings to be made in Gmail:

Log in to your Gmail account from the official Gmail website or application.
Click the Settings icon to open the web settings page.
Select the Forwarding and POP/IMAP tab and enable IMAP under the IMAP section. 
Click Save Changes button to save the applied settings.

Turning on two-step verification: 

Log in to your Gmail account and go to the My Account section.
Select the Sign-in & Security option and click Signing in to Google.
Under the Password & sign-in method, turn on the bar next to 2-step verification. Then, click Continue.
On the verification page, select the Start setup button to Configure Gmail In outlook.
If prompted, enter the password of your Gmail account. 
Continue by verifying your mobile number by entering the verification code received on your mobile phone. 
Proceed with the instructions on the screen to activate the two-step verification option.

After signing in to your Gmail account, go to My Account.
Click the Sign-in & Security tab and choose Password & sign-in method.
Select the App Passwords option and create a password. Then, click Generate and then Configure Gmail In outlook.
You have to enter the app password each time you log in from your device.

Configure Gmail in Outlook on a Windows Computer:

Launch the MS Outlook application to add your Gmail account.
Click the File menu and select the Add Account tab.
Type in your email address and click the Connect button.
Now, you will be redirected to the Gmail window to log in using your account details.
Enter the password of your Gmail account and click the Sign in button.
Since you have already enabled 2 step verification, enter the 6-digit code received on your mobile device. Then, click Done.
Select Allow to accept the permissions of your Google account.
Once you have made all the changes, click Done.

Configure Gmail in Outlook on a Mac Computer:

Open Outlook and select the Preferences option.
Click the “+” icon and select the New Account tab.
Enter your email address and click Continue.
Log in to your Gmail account by entering the password. Then, select Add Account.
Click the Continue button to sign in to your Gmail account.
When your Google browser opens, click Sign in to Google.
Choose your account from the list to log in to your account.
Enter the password of your Gmail account and click Next.
Now, click Allow when prompted for Google account permissions.
Now you complete the Configure Gmail In outlook with two-step verification in Microsoft Outlook.