Can I buy S&P 500 with $100?

Excuse me, I'm curious about something. I've been hearing a lot about the S&P 500 and how it's a good investment option. But I'm a bit tight on my budget and I was wondering, is it possible to buy into the S&P 500 with just $100? I understand that it's a major index and usually requires larger investments, but I was hoping to find a way to get started with a smaller amount. Can you provide any insights or options that might allow me to do this? Thank you for your time.