Badges with numbers on a board does not represent the sprint value
Platform Notice: Cloud Only - This article only applies to Atlassian products on the cloud platform.
Summary
What do the grey, blue, and green badge mean in the scrum project backlog?
Environment
Jira Cloud
Solution
These colored badges are referring to the estimation for the respective Sprint in the backlog of the scrum project:

This feature represents the estimation added to your Sprint, which can be: Story points, Time tracking, Issue count, or as per what you want to estimate cards. To set the estimation please click on the three dots icon (...) > board settings >Estimation.
The colored badges calculate the estimation based on the board's column configuration. For example, referring to the above screenshot, let's look at the board configuration:

→ Grey Color represents the statuses mapped under the "To Do" column, i.e. "To Do" status
→ Blue Color refers to the statuses mapped under the "In Progress" Board column, i.e. "In Progress" and "Testing"
→ Similarly, the Green color represents the "Done" column which comprises "Done" and "Resolved" statutes.
In short, the summation of estimation is coming from the statues mapped under specific columns and not from the statues directly.
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