The United States Postal Service has delivered your card (green card, EAD, or other document) to the address USCIS has on file. If you have not received it, check with other household members and your mailbox.
What You Should Do
Check your mailbox and with household members
Verify all information on the card is correct (name, dates, category)
If you did not receive it, contact USCIS and consider filing Form I-90 for a replacement
Store your card safely — you may need it for employment verification, travel, and other purposes
For EAD cards, note the expiration date and plan for renewal if needed