Business & farm

Hmmm I better check the corporation type I said is right. Thought that's what he told me, but could be wrong. In mediation I asked my attorney to hold me harmless since an accountant did all his business tax stuff and I was NEVER privy to business info, income or anything ever!, only tax return I signed once a year and did not understand,  but my attorney and mediator assured me I's be fine based on how it was filed and so language wasn't included in agreement so now you have me a little concerned!! Not that much though because I really don't think he'd do anything illegal. Cheat ME, yes, but IRS? Don't think so. Also, he had a legitimate CPA do the taxes. Where can I find out what kind of business? Is that in tax documents? I may have form name wrong, just know was done without a W2 for years and last couple was a W2 like an employee. Thank you!