I ask for help by mistake 500

Hi, my site has been error 500 for three days. I asked ovh support but I don't get it. They simply wrote to me by sending me a link with various changes to make that despite having made them, it did not lead me to anything. Could you help me? Thank you

Hello @SamantaB,

I invite you to specify your offer and your domain name so that we can better understand the situation you are in.

^FabL