My file is dameged. Is there anybody can fix my damaged file?

I obviously saved this file last night, but today I saw that my file cannot be loaded. Is there anybody that can fix my file? If you're able please fix the file as soon as possible. The school starts 2 days later. I will have to study very hard. and I cannot speak English very much.(I'm Korean) I hope you understand it. the school starts 2 days later. I will have to study very hard. and I can't speak English very much and my grammar is not perfect. (I'm Korean) I hope you understand it. (please use as easy vocabulary as possible)