Create api key
and yout colab:
from google.colab import files
files.upload() #upload kaggle.json
!pip install --upgrade --force-reinstall --no-deps kaggle
!mkdir -p ~/.kaggle
!cp kaggle.json ~/.kaggle/
!ls ~/.kaggle
!chmod 600 /root/.kaggle/kaggle.json
!kaggle competitions -h
!kaggle competitions download -c DATASET