I made a story but cant find a way to upload it.

You don't. e621 isn't designed or targeted to storywriters.

Edit: I don't know what kind of story you wrote, but inkbunny and sofurry (both furry-centric) let you upload stories; it might be worth looking into.

This site is focused on images. There really isn't a way to post stories. I've seen people use descriptions, but that doesn't seem to work too well.

E621 is a booru-like thing , not a general art site in the sense that DA,FA or InkBunny are. We archive visual media only.

You draw a good image based on the story, then put the story in the description.

Halite said:
You draw a good image based on the story, then put the story in the description.

That could work, but I don't think it would attract a very large audience here

Durandal said:
That could work, but I don't think it would attract a very large audience here

I've seen those here before and I started marking those with the story tag, but ended up autocollapsing the description box because I got sick of randomly having to scroll way down to look at the comments.

That and the desription box is rarely used for anything useful.

Durandal said:
That could work, but I don't think it would attract a very large audience here

I know I'd prefer to avoid them here. E621 just isn't a very good place to display one's prose. I see Descriptions as captions for pictures, not the main event itself. The less said, the better.

Put a section tag in the description to hide long stories.

[section=This story will pleasure you]Your story[/section]