Can i know what have to spray for the marks on musk melon fruit?

I didn't get the smiliar disease in plantix app to get the solution

Hi Satish . Your sent image is not clear and dull. I think it's not disease, it's a insect attack as said above Melon Fruit Fly . Lets check symptoms carefully by clicking on green link for taking control measures from Plantix library.

Thanks Suresh , i will check it

Welcome Satish.