If a crime has been committed you contact law enforcement and your brother might go to jail. You can sue your brother, which will take months. If...

From your post, you bought the vehicle so who else do you believe is responsible for storage fees, for your vehicle on your property?

You don't. Courts do not revise history and remove public records. You can pay so it shows it is satisfied. Otherwise, eventually you might start...

It means your credit report shows it as closed. That has no bearing on whether you still owe the money and whether you will have other consequences.

Can I file a lien on a leased vehicle?

No - what do you think you would get? A vehicle that the leasing company will just come and pick up from you.

You will need to call lawyers in your area and discuss fees.

How can I get my money back?

If it is a scam (and it appears probable) then you likely will not get any money back at all. Even if it was not a scam you should have walked...

Can I sue a company and the company employees for discriminated and harassment?

Did you actually tell them your disability? Did you shop or not?

Can I take legal action against a scammer?

Legal action against .... who? What is their name and their address to serve them with a lawsuit? What are you going to sue for?

I filled a tax return for zero income. This was to get the pandemic check. At that time, I did not know the importance?

Are you admitting you filed a false tax return to get money (a felony) and you are asking for advise on how to further the crime?