Hi @TabassumOnline-4067 ,
WordPress by Bitnami runs on Linux Debian, and requests you set a Username and Password, or Keypair for SSH. After deployment, you should be able to SSH Login to the Virtual Machine if you want to view the files and directories. You can also access the Admin Panel after the Virtual Machine has started. The Admin Panel can be accessed through the IP or Domain with "/wp-admin" after it. Example: http://SERVER-IP/wp-admin/
https://docs.bitnami.com/azure/apps/wordpress/get-started/first-steps/