To package and share project files, you can export all project files to a zip file. For example, you can share a zipped project with people who do not have access to the connected source control tool.
With a project loaded, on the Simulink Project tab, select Share > Zip Archive.
Use the file browser and save the file. By default, the file myprojectname.zip is created in the current working folder.
The archive command exports a complete project.
To share projects with other users, it can be useful to create a model dependencies manifest report showing required toolboxes for your top model. You can save and share that information by adding the manifest report to the project. See Generate Manifests.