To signup with google play store please click below : 
https://play.google.com/apps/publish/signup/ 
Google Play Developer account will cost you $25 

To signup with applpe store please click below : 
https://appleid.apple.com/account 

Apple developer login URL : 
https://appstoreconnect.apple.com/login 
Developer account will cost you $99/year

Required material : 
01 Domain name where script is installed 
02 Script appkey  ( script appkey can be found under "mobile" tab in backend settings )
03 Icon extension .PNG size 1042x1042 
04 Logo extension .PNG size 400x1200 
05 website admin login credentials. 
06. android + iOS accounts login credentials.

Pease login to your client area at www.phptravels.org and submit ticket with above all required details.

If you have not purchased the compiling service and looking to deploy your self please find below video totutrials to execute apps and upload to both stores. 

Video Toturial Guide for Native iOS Application : https://goo.gl/qdkKfs
Video Toturial Guide for Native Anroid Application : https://goo.gl/iwSCUa