I have a soar throat and I have a concert I have to sing in a week what things should I eat or drink to get rid of it fast and is there some methods or risks I should stay away from like I know milk obviously but anything else and will sleep speed it up if I try and sleep all day?

Honey... put a little honey in some warm tea or just a teaspoon every hour or so does the trick for me

I herd sugar is bad for it so won't honey make it worse?

i herd sugar is bad for it so wont honey make it worse?

Nope, warm honey and tea are great for a sore throat. I usually add lemon to my tea also. Honey cough drops and throat sprays are also helpful as well as gargeling with salty water or mouth-wash.
One thing I usually try to stay from when I have a sore throat is anything spicy that might stick to my throat.