Hello Anes,
There are two ways to create tables in your created service database.
1- By clicking on Upload backup icon. You can upload backup and restore it directely on your created service, if you have database backup file.
2- By clicking on Bind IP List icon. You can bind your created service providing Source IP (IP of machine from where you want to access database). After that click on Details icon and use the credentials ( Public IP, VM Port, User Name, Password, Databse Name) to connect the service from your machine using your favorite client. Now you can execute all the MySQL commands( create tables etc.).
Hope this will help you.
Thanks
Deo