Depending on where you are, you may only have an hour or less to file your claim.
See this thread on the topic:
www.macrumors.com
It takes only a few seconds if you have the Serial Numbers of the iPhones. I did a bunch of iPhones, so you could get a decent amount of money from it.
Here is the link:
www.smartphoneperformancesettlement.com
See this thread on the topic:

iPhone Users Who Experienced 'Batterygate' Can Now File to Receive Around $25 Settlement From Apple
Earlier this year, Apple agreed to settle a U.S. class action lawsuit that accused the company of "secretly throttling" older iPhone models....

It takes only a few seconds if you have the Serial Numbers of the iPhones. I did a bunch of iPhones, so you could get a decent amount of money from it.
Here is the link: