You'll need to get your public address for each blockchain you interact with using Bifrost Wallet - for example ETH, SGB and XRP. The instructions will be similar for each.
Bifrost Wallet doesn't offer a CSV export function just yet. However, you can create a custom CSV file and upload this to Koinly instead. Once you've created your CSV file, here's how to upload it to Koinly...
Something looking strange with your Bifrost Wallet data import? Not to worry, we've got plenty of help available: