My MacBook Pro won’t charge and the battery is completely uncharged

First, read If your Mac battery won't charge - Apple Support.

The power adapter and / or cable may be defective. Depending on your model MacBook Pro, read

If your MagSafe cable or power adapter isn't working - Apple Support

If your USB-C power adapter isn't charging your Mac notebook - Apple Support

If the battery has been left in a discharged state for a long time, it may need to be replaced: Find how to service or repair your Mac.

See the Related Article linked above. If you’ve already gone through that list, use the Get Support link in the upper right of this webpage, and discuss your options and alternatives with Apple Support.