Can anyone help please? Or give me advice?

Hi recently left my ex eho used my details to basically get credit in my name but i didnt know aboit it and ruined my credit score, and i just need £80 to get some fuel and bits for my daughter to get me to my next payday where i can breathe again, and ive got us in a better situation, any advice /help? (I have notified the police and relevant athorities that this has been done to me)