Are you talking about tweeting replies based on keywords in a tweet directed towards a specific @user? If so, then you should be able to find a developer to create a simple Twitter bot for you. You can get really fancy with it and even train an AI model to come up with replies on its own.

Analyzing data is a much different beast than a Twitter bot. For one, Twitter data is unstructured data. Also, how do you want to analyze this data and how do you plan on using these results? That makes a big difference in the direction that the real answer to this question will take. There are a number of different tools available, but it's probably going to require a hybrid solution of custom programming on top of using the tools available.

are you familair with bots

To gather and analyze replies from a specific brand's Twitter account, you can use several tools and approaches. Here are a few options:

1. Tweepy (Python Library)
Tweepy is a Python library that interacts with the Twitter API. You can use it to collect tweets and replies from a specific user.
2. TAGS (Twitter Archiving Google Sheet)
TAGS is a Google Sheet template that allows you to set up and run automated searches of Twitter. You can use it to collect tweets and analyze them using Google Sheets.
3. Brandwatch or Hootsuite
These are professional social media analytics tools that offer in-depth analytics and tracking capabilities. They can track mentions, hashtags, and interactions on social media, including replies to tweets.