I live on SS . How can I file for the C V Stimulus check if I don’t file taxes. ?

You will receive your stimulus check if you receive Social security income. You do not need to file a tax return.

Below is an extract from an IRS document:

I am not typically required to file a tax return. Can I still receive my payment?

Yes. The IRS will use the information on the Form SSA-1099 or Form RRB-1099 to generate Economic Impact Payments to recipients of benefits reflected in the Form SSA-1099 or Form RRB-1099 who are not required to file a tax return and did not file a return for 2019 or 2019. This includes senior citizens, Social Security recipients and railroad retirees who are not otherwise required to file a tax return.

Since the IRS would not have information regarding any dependents for these people, each person would receive $1,200 per person, without the additional amount for any dependents at this time.