Out of risk of doxxing myself, I don't want to give too much information, but specifically we work to help set up immigrants and refugees with housing, healthcare, education, and other resources, so I am not sure if it necessarily applies to your circumstances. Though my particular role is not that glamorous, I just maintain the infrastructure.

If you're in the US, you can often dial 211 (depending on your city) to get connected with various resources depending on need, or crisis lifelines in an emergency. Local and state governments will also often host sites or portals with access to various social services they offer. Sometimes even a 211 website for both at once.

In emergencies, hospitals will also always be able to help, but keep in mind a lot of their services are not free. Ask up front if various consults/appointments come with a charge before you end up with a bill. But even if they're unable to provide anything directly without charge, they can often still put you in contact with services they contract with, such as social workers or community wellness representatives, who may be able to provide free help depending on your circumstances.

I've heard even just popping over to public institutions like town hall or the local library (but not schools, avoid schools if you look homeless) can be a helpful place to start to get familiar with resources in the community.