Sign in to the Google account that manages the Business Profile
Go to Google Business Profile Manager
Select the business you want to delete
Open the business profile settings
Click Remove business profile or Delete profile
Confirm the deletion when prompted
If you only want to stop managing it, choose Mark as permanently closed instead
If you want to delete the entire Google account, go to Google Account settings
Open Data and privacy
Select More options
Click Delete your Google Account
Follow the confirmation steps to finish