There is no class action lawsuit. There is a settlement between Intuit and the attorneys general of the states. Under the terms of the settlement, there is nothing you can do now to be "entered" into it. If you are a "Covered Consumer" you will automatically receive a notice and payment. Here is the definition of "Covered Consumer" from the settlement agreement.
"Covered Consumer" means any individual, or individuals if a joint return was filed, who in Tax Years 2016, 2017, or 2018 was (1) eligible to use an Intuit IRS Free File Product; (2) began his or her tax returns using a TurboTax Free Edition Product; (3) was informed that he or she was ineligible to use a TurboTax Free Edition Product; (4) subsequently paid to use a TurboTax Paid Product, and (5) had not used the Intuit IRS Free File Product in a previous tax year.
All the details are in the press release from the Attorney General of New York and the settlement agreement, at the following links.
press release
settlement agreement
