filing divorce papers help

I am filing my own divorce papers and im at the part where it wants to know about child support well my soon to be x husband is on disability our child receives a check from social security through her father so how do i fill out the child support part

i cant afford a lawyer so this is all on my own

Not sure anyone can tell you what to put down on the papers without actually being able to read them and see them. If you need help, try legal aid---there is free legal aid in every town in the country (Just about.....or near by).