Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Since this is a newly created company account, please start by checking whether you can sign in to Outlook on the web using the account and password provided by your company.
If you cannot sign in there either, the issue may be related to the account itself rather than the Outlook application. For a Microsoft 365 business account, the organization administrator needs to make sure the user account is properly created and the appropriate license is assigned.
In this case, please contact your company's IT administrator and ask them to check whether your account is active, the appropriate Microsoft 365 license has been assigned, and there are no issues with your password or MFA/security registration.
If you can sign in to Outlook on the web but cannot sign in to the Outlook desktop application, the issue is more likely related to Outlook itself. To better understand your situation, could you please share what exact error message do you receive? (Please hide any email address, company information, or other personal information from screenshots before posting them, as this is a public forum).
I hope this information helps and look forward to your response.