Is Literature Singular or Plural?

No, literature should be used with a singular verb. Uncountable nouns

Uncountable nouns
In linguistics, a mass noun, uncountable noun, or non-count noun is a noun with the syntactic property that any quantity of it is treated as an undifferentiated unit, rather than as something with discrete elements. ... Mass nouns have no concept of singular and plural, although in English they take singular verb forms.
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are almost always singular, even if they refer to multiple "items".

Does literature have plural?

The plural form of literature; more than one (kind of) literature.

Can you say literatures?

Literature is an uncountable noun, so we can't say one literature or two literatures.

Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.