How do I vote on voting day?

So I am 21 and this will be my first presidential election I can vote in. I registered a long time ago, and I was expecting my mail ballot and I never received it. I 100% want to vote and I am having a hard time figuring out how to vote on Election Day. I live near Salem so I figured it would be easy to find polling locations there but I just keep getting stuff about the drop boxes.

So how does voting work on Election Day? Or does anyone have any info they know about what Salem is doing that day for people voting?