Hello, I am a different expert.
The tax lien is probably over sales taxes or withholding taxes. The State has you listed as a responsible person because of your involvement with trying to help the previous owners with their filings, which is why the State has assessed you for the taxes of a business even though you were only a cashier. Sometimes employees are responsible persons (ie, responsible for collecting, reporting, and remitting sales, use, or withholding taxes), and they can be held liable if they fail to carry out their duties.
This is a major mistake on the State's part most likely. You are probably not a responsible person in any way because you were just a cashier trying to be nice and help translate for the owners. Your signature on any tax form tends to be prema facie evidence that you are a responsible person, for example, but it doesn't mean you are. To clear your liability for the tax and release the lien you need to show that you are not a responsible person.
The lien was likely placed under the following MCL 205.27a:
"(5) If a business liable for taxes administered under this act fails, for any reason after assessment, to file the required returns or to pay the tax due, any of its officers, members, managers of a manager-managed limited liability company, or partners who the department determines, based on either an audit or an investigation, is a responsible person is personally liable for the failure for the taxes described in subsection (14)"
Sometimes people have to go through court to get a ruling that they are not a responsible person because the State just won't believe them. It may be quite a battle. You'll likely need to get professional help. Michigan is terrible to work with unfortunately, as its automated system will just hang up on you if you call it and their agents are busy...
I suggest contacting the Taxpayer Advocate to get started that was posted above. Your defense is that you are not a responsible person. Put it in writing, etc.
Best of luck!