The Field Watcher is a debugging tool that allows you to monitor the values of fields on a form as they change due to scripts or other actions. It can be used to debug Business Rules, Client Scripts, and Access Controls, but not Script Includes. Script Includes are server-side scripts that define reusable functions and classes. They are not associated with any specific field or form, and therefore cannot be watched by the Field Watcher.
References:
Field Watcher
Script Includes

A transform map determines the relationships between fields displaying in an Import Set table and fields in an existing ServiceNow table, such as the Incidents or Users table.
Reference: https://community.servicenow.com/community?id=community_question&sys_id=69fc8369db9cdbc01dcaf3231f961935 The following platform feature can be used to determine the relationships between fields in an Import Set table to fields in an existing ServiceNow table:
Transform Map. This is a feature that defines the mapping between the fields of an Import Set table and the fields of a target table, such as incident, problem, or user. A transform map also specifies the logic and rules for transforming the imported data, such as coalescing, scripting, or applying data policies.
The following platform features are not used to determine the relationships between fields in an Import Set table to fields in an existing ServiceNow table:
Business Service Management Map. This is a feature that provides a graphical representation of the configuration items (CIs) and their relationships in the Configuration Management Database (CMDB). A Business Service Management Map can be used to visualize the impact of incidents, changes, or problems on the CIs and the services they support.
Data Sources. This is a feature that defines the connection and authentication information for an external data source, such as a file, a JDBC database, or a web service. A data source is used to import data from the external source into an Import Set table.
CI Relationship Builder. This is a feature that creates relationships between CIs in the CMDB based on predefined or custom rules. A CI Relationship Builder can be used to populate the CMDB with the dependencies and connections between the CIs. References: Transform Maps, Business Service Management Map, Data Sources, CI Relationship Builder