You'll probably need to put a little more effort into your request for help.
What was the rejection message? That will help us help you figure out what you need to address.
Share a short excerpt from your story, so we can see what the writing is like. If the rejection was about dialog formatting, share a section of your dialogue.
Once you give more details, we might be able to help you fix and resubmit!
And before you ask someone to edit it, make sure you make it as good as you possibly can by yourself. Read it for consistency. Read it for logic. Read it for clarity. Check the spelling and grammar. Use Read Aloud to catch whatever typos are left.
If you ask someone to volunteer their time and energy, it's only polite to do as much of the work yourself as you possibly can. Basic proofreading might be tedious and time-consuming, but it's tedious and time-consuming for the editor too, and it's not even their story.