childs
Childs is not a standard plural form of child in modern English. A child refers to a young human being, typically one who has not yet reached adulthood. The standard plural is children.
In contemporary writing, encountering the form "childs" usually signals a misspelling, typographical error, or nonstandard usage.
Historically, the plural of child developed as an irregular form in English. The Old English word cild
The word child itself remains in common use to denote a young person, while child and its