A hyphen (-) is a punctuation mark that is used to link words that function together in a sentence or phrase.
Apostrophes look like a single quote mark after a word and before another letter usually. They are often used to show that two words have been put together such as in the word don't which are the words do an not put together.
Lastly, although it is a niche rule, a lot of guides mention that you should spell out numbers if they are used in a common phrase or colloquial expression. If the number is large, it is also advised to hyphenate in the spelling. For instance: I think the song goes: “Ninety-nine ...