First of all you should know all these information taken from this official url https://support.google.com/business/answer/7107242?hl=en&ref_topic=4854193
You need to create or claim a Google My Business listing before you can start the verification process. You may see one or several types of verification depending on the type of business listing you manage:
Verify Business Listing By Post Card:
To verify your business listing by postcard, enter your business address in Google My Business. You'll be sent a postcard with a verification code. Most postcards arrive within 12 days. Before you request to verify your listing by postcard, make sure that your business address complies
Desktop
To request a postcard:
- Sign in to Google My Business.
- Choose the business you'd like to verify, then click Verify now.
- On the postcard request screen, make sure that your address is displayed accurately. If it isn't, edit the address before you request your postcard. You can also add an Optional contact name to help your postcard reach you.
- Click Send postcard.
- Check the mail for your postcard. Most postcards arrive within 12 days. Don't edit your business name, address, or category, or request a new code while you're waiting—this may delay the verification process.
To enter the verification code:
- Once you receive your postcard, sign in to Google My Business.
- If you manage more than one location, click Manage location on the location you want to verify.
- Click Verify location from the menu (or click the Verify now button).
- Enter the 5-digit verification code from your postcard in the “Code” field.
- Click Submit.
If your postcard is lost or missing, you can request a new one.
Mobile
To request a postcard:
- Open the Google My Business app.
- Tap Send postcard.
- Choose the business you'd like to verify, then tap I don't have a code.
- Check the mail for your postcard—it should arrive in one to two weeks. Don't edit your business name, address, or category, or request a new code while you're waiting—this may delay the verification process.
To enter a verification code:
- Once you've received the postcard, open the Google My Business app.
- Choose the business you'd like to verify.
- Tap Enter code to complete the verification or I don't have a code if you never received your postcard.
Once you've entered your verification code, your business information will be eligible to appear live on Google Maps, Search, and other Google services.
Verify Business Listing by Phone :
To verify your business listing by phone:
Desktop
- Sign in to Google My Business.
- Choose the business you'd like to verify, then click Verify now.
- Make sure that you can directly answer your business phone number to receive your verification code.
- Click Verify by phone to have the code sent to your phone via automated message.
- Enter the code from the message.
Mobile
- Open the Google My Business app.
- Tap Call me now.
- Enter the code from the message and tap the arrow icon .
Once you've entered your code, your business information will be eligible to appear live on Google Maps, Search, and other Google properties.
Verify Business Listing by Email :
Email verification isn't available for all businesses. If you don't see this option when you attempt to verify, try another verification method.
Before pursuing verification by email, make sure that you can access the email address shown in the verification screen.
Desktop
If you're returning to verify after creating your listing, visit Google My Business, choose the business you'd like to verify, and click Verify now.
- Click Email from the list of verification options.
- Check your email.
- Click the Verify button in the verification email. (You can also enter the code from the email in your Google My Business dashboard.)
Mobile
If you're returning to verify, open the Google My Business app or visit https://business.google.com and choose the business you'd like to verify.
- Tap Send email.
- Check your email.
- Tap Enter code, then enter the code from the email.
- Tap Submit.
Once you've entered your code, your business information will be eligible to appear live across on Google Maps, Search, and other Google properties.
Bulk Verification :
If you manage 10 or more locations of the same business, your business listings may be eligible for bulk verification you can check more about this as mention above first line of this blog
Having trouble with verification?
Faq's Ask By user if they have any issue or want to talk support team :
Google Business Customer Service Team
