Does the actual WEB ADDRESS for each specific page affect my SEO?

You know when you first make a web page, and you're required to make a name? For instance: www.fedupwithed.com/EXAMPLE

So, I've found out that there is no way to change what you first wrote. I have a page that's about eating disorder awareness and it's URL is www.fedupwithed.com/aboutus

ABOUT US? It's about eating disorders! Ahhh.

My question is....
Is this going to affect my SEO?
Because if it is...
I should probably make all new pages on my site.
But that would take a long time! And a lot of effort.
So...
Does this affect anything?

I don't think it would make any difference.

What the hell do you mean man!? How can you not edit your pages/web address? Of course you can change the filenames on your server!

You can change the file name to whatever you want. Domain name doesn't matter much, it is the content that matters.

I think it mattes some what. If you are selling pies and your url is like

site.com/we-sell-pies

it will come up in search results because the search engine is not only indexing your content but indexing those keywords.

Domain name does not have to contain the keyword you are aiming at, but it it does, it helps significantly.