You can cancel your subscription directly from Subscriptions and billing.
Here's how:
Click the Gear icon in the top right.
Under Profile, select Subscriptions and billing.
Under Billed to you, find your subscription.
Select Cancel and follow the prompts to confirm.
If you subscribed through the Apple App Store or Google Play, you will need to cancel your subscription via those platforms, as Intuit cannot process those cancellations directly.