According to the Poshmark help section, you should be able to track the status of your order following these steps:
go to poshmark.com;
log into your account;
click the 'My Account' tab;
go to 'My Purchases';
select the order that you want to track and click it.
To get more information about your order, please contact the Poshmark customer care team:
by phone at (650) 262-4771;
by email at support@poshmark.com;
via the company's social networks.