Hi,
If you want to Filter by the Created By field, you must note that in PowerApps it is called 'Author' and it is a lookup field.
To get the current user you can use the User() function.
Thus, your formula could look something like this:
Filter(List_Name, Author.Email = User().Email)
However, be careful that the filter will not be delegable because of the lookup filed, so if your list has more than 500 items, not all items will be filtered.
Hope this helps