What are the odds of a liver problem from the covid vaccine, a year after receiving my two doses? has this happened to anyone?

Very rare. It is as safe a vaccine as could be. Nothing in life is 100% safe.

Liver problem could be a serious issue that you should have a comprehensive evaluation to know the cause, and if reversible that attempts could be made at managing it to reverse the damage or at least slow it down. It is difficult to give you more information since you did not state the nature of the liver problems.