The word "quotums" is one of those tricky plurals in English that doesn't quite follow the typical "-s" or "-es" plural rule. In fact, it's not even the most common spelling of the word - "quotas" is much more widely used. But if you do need to use "quotums," it's pronounced "kwoh-tuhmz," with the stress on the first syllable. The spelling of the word is based on the Latin "quota," meaning "a part or share," but the "ums" ending is likely influenced by plural Latin nouns ending in "-um."
There is no word "quotums" in the English language. It may be a misspelling or a potential variation of the word "quotas". The term "quota" originated from Latin in the mid-17th century and is used to refer to a fixed or predetermined amount or proportion assigned to someone or something.