Autodesk has largely removed direct public links for older versions like 2018. However, there are still official ways to access it:
: You can download a 30-day free trial of the current version of Maya to test its features before committing to a plan. Creating 3D Text in Maya Autodesk Maya 2018 Free Download
If you already have Maya installed and want to develop text (3D Type), follow these steps using the : Create 3D Text in Maya 2019 Autodesk has largely removed direct public links for