View Mailbox Quota Limit settings using Shell Command

Use the below shell command to view the Mailbox Quota limit settings

Get-Mailbox -Identity "Mailbox Name" | Fl Name, UseDatabaseQuotaDefaults

If the UseDatabaseQuotaDefaults parameter is set to True then the Mailbox limits settings are inherited from the Database level settings, if it is set to false the use the below the shell command to find the quotas

Get-Mailbox -Identity "Mailbox Name" | Fl Name, UseDatabaseQuotaDefaults, ProhibitSendQuota, ProhibitSendReceiveQuota, IssueWarningQuota

Above Commands can be used in Exchange 2010 Exchange Server 2013 and Office 365