Currently, JQL does not support direct comparison between two custom number fields.

Per the documentation here - https://support.atlassian.com/jira-software-cloud/docs/jql-fields/

It does not have a JQL parameter to compare both field values.

For example, the JQL like the following doesn't pull up any work items

"Story Points[Number]" != "test[Number]"

The user would like to compare two numeric fields to check if they are equal or not.

The user would like to perform the actions without a Add-on.

Currently the workaround is to use Script Runner.