How likely is it for someone to survive brain cancer and tuberculosis in the lungs?

Tb chances are good. It is quite unlikely to have both conditions at the same time. This makes therapy more challenging but doable. Cure from tuberculosis should be expected. The main concern here is the brain cancer. For the most common adult brain cancer, survival is about a year, give or take a few months.
Check with your doc. It really depends. Brain cancer can possibly be removed. Are may be it is tb? Tb can be cured see pulmonologist asap.