I'm on SSI mental disability & am wondering what to do now that my medical bills have been placed in collections? I can't pay!

Sounds like your Father i trying to help. Your SSi benefits can not be garnished even if they get a judgement.

Can I sue social security for causing me to be homeless?

No you can't sue them for being homeless. You should concentrate on keeping the benefits since they may well cut them off again.

I have been getting 2000 month for loss earnings. if I get approved for social security disability. do I have give it back

You do if your policy requires it, but not if it does not. Check the policy.

Do I have to List Social Security Retirement benefits when applying for Financial Aid in College?

If they are asking for income and assets, yes of course.

When applying for SSI for my minor disabled Child, will accounts that I am on as treasurer of local nonprofit be a problem?

It should not be a problem as you are not owner of the accounts. If ssa does ask, just show them you are an officer of the non-profit with a...

You really should see a disability attorney for a free consultation to get a good answer.

How is ;my monthly benefits determined? How many years of work is it based on?

Not sure what you mean by a partial monthly benefit.

Can I receive compensation for taking care of my father full time?

Well can your Father pay you for your services?

File a police report for identity theft.

How can I get a social security card?

You can't get a replacement card unless you can show you have been issued a card before.