2011 Buick Regal - Oil issues

A couple of days ago I experience a small oil leak n that next moring I want to go start my car it was okay but when I got half way to the store the oil just drop and it was Smokey

without knowing where the leak is coming from or how much is leaking on the ground it is hard to give you advice except bring it to a reputable local repair shop. it could just be a valve cover leaking. some of the oil is probably leaking onto your exhaust causing the smoking.

how did you determine oil level had dropped? Did you check oil level at store? Did your red oil light come on?