I am living from my savings I am living in grandparent house and they live from social security so I have not filed taxes because I have no earned income these years I have not had a job financially there's no need because I have money saved but it isn't in the bank or anything it's off record. It's money from the time when I did work and did my taxes in the past. It's in the US

I have a child a dependent but I don't know how to file taxes because first of all are they going to ask how do I financially support myself earn income if there's a job or how do I have money how much money do I have what have I spent etc. I don't have receipts and I haven't calculated how much I have spent and how much I had saved. I haven't worked so I don't exactly have income so I haven't filed taxes.

The insurance and the school for the child are asking me to have taxes so they can understand my income they have asked me to have taxes filed.

How can I file my taxes for myself and my child?