Emergency root canal

Hi it’s Eryn, I moved to NYC a couple months ago. I cracked my back tooth about 4 years ago, but it had not caused me any pain until about 2 weeks ago it started causing excruciating tooth aches that makes normal activities (especially musical theatre school) extremely hard to get through. It continued to hurt bad enough with no relief, that I went and got it checked on and found out that I need a root canal asap. I don’t currently have dental insurance and this procedure is not super cheap as everyone probably knows. Especially for a college student with a part time job. Any help would be greatly appreciated even if all you can offer is just kind words, and prayers in this time because I know we all have our battles. Thank you!