If you fill in this form, Equifax will send you $125 as part of its settlement with the Consumer Finance Protection Bureau, the FTC, and 48 out of 50 states.
Equifax doxed the nation and profited handsomely from it. $125 is a laughably small sum given how much damage the data they hemorrhaged all over the internet could cause you. Equifax should have faced the corporate death penalty, the execs who oversaw the disaster should have had their assets seized and diverted to anti-identity-theft measures and charities.
Instead, the FTC et al are hitting the company for a maximum of $700m(how much they pay depends in part on whether you fill in this form. Equifax's market cap stands today at $16.6B, and it posted $3.412B in earnings in 2018, up 1.48% increase from 2017.