This is the 3809th most frequent German word.
schrott
Scrap; junk; rubbish.
This usage of 'Schrott' expresses strong disapproval or criticism of the idea, equating it to garbage or something worthless.
Die Idee war absoluter Schrott.
The idea was absolute garbage.
Here, 'Schrott' is used to describe an item, the old computer, which is considered no longer functional or valuable and thus regarded as junk.
Der alte Computer ist nur noch Schrott.
The old computer is just junk.
In this sentence, 'Schrott' is applied metaphorically to describe the state of the car being completely broken beyond repair.