Can they take my 20 year old mobile home that I still owe approximately 18000.00 or my free and clear 10 year old car?

Depends on your State - seizing property never makes sense because the creditor then has to safeguard and sell it.

How much is the credit card debt?

Taking property happens every day in some states,

How old is the debt

What type of debt is it.

Have you tried, to work out payment plans