The HP Color LaserJet m252dw is compatible with Apple's AirPrint when configured to use a wireless or wired network connection. However, even if you have it configured for network connection, if you also have a USB cable connected to it, that will block the reinstallation in the Printers & Scanners panel. Remove the USB cable if that is the issue. The device also needs to be on the same wireless SSID, or Ethernet segment as your MacBook Pro.
Power on your HP printer and ensure it has a network connection. Then…
If there is an entry for this printer in your Printers & Scanners panel, then right-click on it to choose Reset printing system… and click the Reset button on the following dialog. That will clear the printer listing where you now click the [+] symbol to add the HP device back. You should see this panel that will instead, show your HP printer:
Click once on the line containing the printer name and it will then activate the Use selector, either with Auto Select or the name of your printer. Then you just click the Add button to re-populate the Printers panel. Right-click on the entry there and select Set default printer. Test print something.
You can confirm your toner level on the Options & Supplies… > Supply Levels panel.
