: You can download the version 18.3.3 installer directly from the official Parallels server.
: If you have a license, your activation key is stored in your Parallels account dashboard under the "Active subscriptions and permanent licenses" section. Activation Process : Open the Parallels Desktop application. Navigate to Account & License > Enter a key . Paste your key and click Activate . Free Trial Option
If you want to test the full features of Parallels Desktop 18 without a key initially, you can activate a . Sign in to your Parallels account within the app. Select the Try Free for 14 days option.
If you have already purchased a license or wish to use the official trial, follow these steps:
How long is the Parallels Desktop Pro free trial? The free trial lasts 14 days from activation. Parallels Desktop for Mac registration and activation