Does Fundedbit required to complete trading days for payout?

All challenges require a minimum of 4 trading days. For 1-Step and 2-Step, those 4 days are completed during the challenge phase before you get funded. On the funded account itself there are no additional minimum trading days required for payout, just the 21 day initial waiting period after your first funded trade. For FastTrack, the 4 minimum trading days apply on the funded account and your first payout is available from day 14 onwards.