CFML plugin is only available in Intellij IDEA (https://www.jetbrains.com/help/idea/coldfusion-support.html), and we don't plan to enable it for WebStorm in near future... If all you need is some basic syntax highlighting, you can either create a new file type in Settings | Editor | File Types, add .cfml as a registered pattern there, and define your own syntax highlighting rules, or search for existing textmate bundles for CFML on the web, import them and use for the .cfml syntax highlighting - see https://www.jetbrains.com/help/webstorm/2019.3/tutorial-using-textmate-bundles.html
CFML plugin is only available in Intellij IDEA (https://www.jetbrains.com/help/idea/coldfusion-support.html), and we don't plan to enable it for WebStorm in near future... If all you need is some basic syntax highlighting, you can either create a new file type in Settings | Editor | File Types, add .cfml as a registered pattern there, and define your own syntax highlighting rules, or search for existing textmate bundles for CFML on the web, import them and use for the .cfml syntax highlighting - see https://www.jetbrains.com/help/webstorm/2019.3/tutorial-using-textmate-bundles.html