So far, you have posted nothing to suggest that your termination was wrongful (illegal) as defined by law. What law do you think the employer violated by terming you?
In at-will employment you can be terminated at any time for any reason except a reason prohibited by law (examples religion, gender, race....) or unless you have a binding employment contract to the contrary.
As cbg asked, what law do you believe your employer violated - based on your post, I don't see one.
You can look for other employment & file for unemployment ins. The state will decide if you qualify.