My Excel Document is Corrupted and it would not open. I urgently need this

– I have set a budgeting file and it is corrupted
– I need to submit this asap and need help
– I would be more than happy to email you personally to help me watch what can be done to recover this file
– I have been trying for the past 6 hours and nothing helped me
– I am using a macbook and the file type is xlsx and it is showing corrupted and everything comes in unicode if I try using it with xls.
– Please help it is really very very urgent!!!