Update Scope chapter

Using text from Bob's Word doc

Signed-off-by: Arthit Suriyawongkul <arthit@gmail.com>

docs/scope.md

@@ -1,3 +1,25 @@
 # 1 Scope
 
-This System Package Data Exchange (SPDX®) specification defines a standard capable of representing systems with software components in as SBOMs (Software Bill of Materials) and other AI, data and security references supporting a range of risk management use cases. An SPDX document can be associated with a set of software packages, files or snippets and contains information about the software in the SPDX format described in this specification.
+The System Package Data Exchange (SPDX®) specification defines an open standard
+for communicating bill of materials (BOM) information for different topic
+areas.
+
+SPDX defines an underlying data model as well as multiple serialization formats
+to encode that data model.
+
+SPDX metadata includes details about creation and distribution, including the
+following:
+
+- software composition, for collections of software (Packages), individual
+  Files, and portions of files (Snippets)
+- software build information
+- artificial intelligence (AI) models
+- datasets
+- creator, supplier and distributor identity information
+- provenance and integrity
+- licenses and copyrights, including a curated list of licenses and exceptions
+- security vulnerabilities, defects, and other quality data
+- relationships between system elements
+- software usage and lifecycle
+- mechanisms to enable annotating SPDX elements and linking between multiple
+  SPDX Documents