Yes, generally all income received from a class-action lawsuit are taxable, unless they are for unreimbursed medical expenses that were not taken previously as a deduction.
To enter them in TurboTax:
Under Income & Expenses,
Scroll down to "Other Common Income" and enter them in the Form 1099-Misc Screen
Follow the on-screen prompts.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"