"Please give me a receipt."
Is there a measure words here? If not then why not?
no need for a measure word if you don't specify how many. However DLs translation is a little ambigious bc it say "a" receipt. You could use 一个，or 一张
The real issue with this a cultural one/legal. A receipt might work for getting reinbursed by most Western companies, but it does not work for most Chinese companies. To reinburse you for expenses in China, Chinese companies need a different kind of receipt, generally called a fapiao.