Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi kamrul,
Greetings.
Thank you for raising your concern in this community.
1 - After the payment, you get the full experience in your admin center, you just have to add new users until you reach 300 users.
2 - 1 TB of OneDrive storage for file storage and sharing per user
You can check this link for some more information
Microsoft 365 Business Standard | Microsoft 365
Please let me know if you have any other concern.
Regards,
Mac