Android App License

Hi, i have a question, if i buy a sourcecode for a Android App can i use this app only one time or can i publish it on google play more times?

Exemple if i buy a sourcecode to create a App for a Restaurant can i use it to create it for more restaruants or must i buy for evry restaurant a license i dont sell them i am the end user.

Thanks and sorry for my bad english.
Daniel G.

One app, one license. Multiple restaurant apps, multiple licenses .