Excruciating lower back pain (left side) for months, always hurting. when i get up from sitting position, cannot walk right away. took x-ray. what does non acute findings, early arthritic changes to the lumbar spine and mild curvature, scoliosis mean?

It means you have early signs of west & tear in the spine, in addition to mild curvature that is consistent with scoliosis. These are not new findings (nonacute) and have likely been there a while. These findings are not uncommon in folks who have no pain, so they may have nothing to do with your pain. Please follow up with a clinician to discuss further evaluation & management of your pain.