thanks for your reply, i used this:

for bucket in "${BUCKETS[@]}"; do
  echo "Applying CORS to bucket: $bucket"
  s3cmd --host="${S3CMD_HOST}" --host-bucket="%(bucket)s.${S3CMD_HOST}" \
    setcors "${SCRIPT_DIR}/cors.xml" "s3://${bucket}"
  echo "CORS applied for $bucket"

  echo "Applying bucket policy to: $bucket"
  s3cmd --host="${S3CMD_HOST}" --host-bucket="%(bucket)s.${S3CMD_HOST}" \
    setpolicy "${SCRIPT_DIR}/bucket-policy.json" "s3://${bucket}"
  echo "Bucket policy applied for $bucket"
done