Here are the steps to get certified.
Go to your certification dashboard
Click on the certification of your choice.
Focus on the certification by clicking the 'Focus' button.
Once in focus mode, you will find links to access the certification's body of knowledge, any relevant on-demand courses or cohort sprints, and a link to take the exam. When ready, click 'Take the exam'.
You can find your history of exam attempts at the bottom of the focus page.