When forming a contraction between "does" and "not," what's the correct way to write it?

Hey there! Hello!

When writing contractions, keep in mind that words are typically combined and one the vowels is taken out and replaces with an apostrophe ('). Look at some of the examples below:

are not = aren't
were not = weren't
could not = couldn't

Following along with the same format, the correct way to type out does not in contraction form is "doesn't."

Hope this helped you out! Feel free to ask me any additional questions if you have any. :-)