In my document, I would like my citations to be in numeric form, enclosed by square brackets. For example, [1]. Now, the science format does what I want but instead of using square brackets, it uses ().
I've changed the Citation Delimiters in the preferences to [], but it still uses (). What should I do to get it displayed how I want?
It's not a Preferences setting, it's a setting for the format you are using. Opent the format and in the Bib & Citations tab set "Enclose citations with" to [].