You import Robinhood trades into a trading journal by either auto-syncing your account through a supported journal or exporting a CSV of your trade history and uploading it manually. Most major journals (TradesViz, Trademetria, TradeZella, TraderSync) list Robinhood as a connected broker that pulls in stock and options trades automatically. Robinhood is among the brokers TradesViz supports for trade imports.
If auto-sync isn't available, request your account history export from Robinhood and upload the CSV using your journal's Robinhood template, which maps the fields automatically.