Locate and click on your name in the upper-right corner to expand the dropdown menu. Then click “Subscription“

The “Account Status section will display by default which will show your current subscription plan and its cost.
You can click on “Current Plan Usage” to see how many quotes, invoices, and clients have been created based on your current subscription plan.
You can click on “Change Plan” to change your subscription plan.
If you want to change your subscription plan to a paid subscription, then there will be a secure prompt for you to enter your credit card information for the desired subscription.