Hi @Juano,
Welcome to the community 
You can have a One to Many relationship in that collection to store the creator and then you can show/hide the edit button based on that property. Like Current Directory > creator’s ( one to many rel ) > email > is equal to > Logged in user’s > email. Or you can add the same condition to the Link action that goes to the edit screen to make that link conditional.
Like if you see here this is for comments. Only the creator can edit it! : Building a simple comments section - #2 by dilon_perera
If you still can’t figure out show your database and current setup and we will help you!
Thank you