You can remove retweets from your Social Studio data by exporting your tweets to a CSV file and then deleting or filtering out the POST_TYPE column:
Include or exclude Twitter accounts or sources by creating a Source Group and adding the Source Group to your Topic Profile.
All Topic Profiles have 30 days of data. To access up to three years of historical data, you can email Social Studio (email@example.com) with your Topic Profile ID and request historical data. As of April 2018, Social Studio does not allow users to collect data back to 2008.
To find your Topic Profile ID, in Social Studio, click on the person icon in the upper right corner, then “Admin.” On the left, click on “Topic Profiles.” Find the Topic Profile you want to expand to three years, and write down the ID number.