It is seen that with many attempts, phone number doesn’t added and Google shows us a message like –
“Your edit couldn’t be verified, so it won’t be published.”

6 common things to follow to get phone number added to any Google Map

1. Associated with many listings, Number should be unique
2. Suggest an edit (Local guides will help, no spam email)
3. Add mobile number to Gmail id
4. Add phone number to all pages including contact us page
5. Create local business listings on other sites with phone number
6. Revoke GMB access from other tools

If nothing work, contact GMB support team through dashboard