In the Custom field formula input field, you can specify a formula to calculate the value of the Score field. Basically, the other half of the equation should be defined here by a mathematical expression: Score = [your custom field formula]
The score field will be visible if all the (custom)fields involved in the calculation have a value. Otherwise, it will not be present on the Issue screen or the configured default value will be displayed.
You can define a default value for the Score fields. The default value of the score field when it is first displayed to a user or if the calculation cannot be performed.
If enabled, Score will be calculated only if the custom field values in the formula have changed in the Issue. (This is the default behavior.)
When disabled, Score is calculated for each event in a given Issue, but this may slow down your system.
The results of the calculation can be divided into ranges. You can display the result numbers in different ranges with a different color on the Issue page.
The configured ranges will be displayed on the top of the page as a table.
Add your Score field to your Issue Screens, card layouts or Issue detail views.