Minutes are usually only hyphenated when they're used in a sentence or phrase as a compound adjective to describe a noun. Whether or not to hyphenate numbers also depends on the way the number is written. When spelled out, numbers one through ten do not require a hyphen.

Should 5 Minute be hyphenated?

5-minute is an adjective. It describes the length of the wait. That is why it is hyphenated. five minutes is a noun phrase so there is no hyphenation.

Should 10 minute be hyphenated?

This applies whether the number is written in words or in digits. The president of the company gave a 10-minute speech to the Board of Directors. ... However, a hyphen is not required if the number is the second word in the compound adjective.