Oh gosh, that's terrible. I'm so sorry you have this horrible pain. And that it stops you from doing the things you want to do. Life IS worth living though. For sure. Your family would be so sad if anything worse happened to you. You don't give much history of what you've done in terms of doctors and treatment. Is surgery an option? Does anything like manipulation help? Tell me more about the actual medical situation and course this has taken. I have scoliosis as well but was born with it. I'm here for you. You are worth it, sweetie. Hang in there. And if you do become desperate, there are numbers to call, websites, etc. that you should reach out to for help.
I am sorry you are in pain. Physical therapy does help but it needs to be done consistently, and typically on an ongoing basis. It also usually hurts more for a bit until the muscles and ligaments adjust to the new movement/use. Aqua therapy helps ease the pain because you have resistance but not gravity working against you and again, done regularly, it does help over time.
Many people have scoliosis , and from my limited understanding most of us have some mild degree of it. I read that surgery for scoliosis isn’t done unless or until the curvature worsens to 50 degrees or more. There are excercises to help with that as well.
Given your cancer diagnosis, perhaps your doctors can arrange online zoom physical therapy to guide you in excercises you can do at home to help you and prevent muscle disuse issues. You don’t want to add that to the problems you already have.
Online physical therapist consults and appts can be arranged just like doctors appts. Talk to your medical coordinator/spine doctor. They can help set them up.