Hi @vijayadurga ammulu welcome to the Atlassian community forum.
In order to improve the Google maps, the best place to explore is the "Local Guides connect" which you need to login with your Google ID.
How can you plan what's to improve?
>> You can plan with a Trello board
How will you likely to track your updates and make notes with write ups?
>> You can use Confluence for sharing, engaging your followers, discuss with fellow Local guides (like me)
Stay safe and stay healthy.