You have to publish it to get a signed apk file. Then you put that file on your android device to play. Any other way than that I have no idea.
If you mean without publishing it to the play store. Just use gmail and email the signed apk file to yourself. Open it on your phone and install the .apk file.
Comments
If you mean without publishing it to the play store. Just use gmail and email the signed apk file to yourself. Open it on your phone and install the .apk file.
Remember to enable non.store app on your device before downloading