In what default directory (fully qualified path) does nmap store scripts?

Nmap (Network Mapper) is a network scanning and security auditing tool. Scripts used by Nmap for performing different network discovery and security auditing tasks are stored in/usr/share/nmap/scripts. This directory contains a collection of scripts for NSE (Nmap Scripting Engine), which enables Nmap to perform additional networking tasks, often used for detecting vulnerabilities, misconfigurations, and security-related information about network services.References:

Nmap documentation, "Nmap Scripting Engine (NSE)".