Delivery % isn’t shown on Zerodha platforms, you can check it out on BSE and NSE sites. For other fundamental analysis you can explore screener.smallcase.com it’s awesome.
You can apply here - https://zerodha.com/gold/
BTST is not a feature. You buy a stock in CNC and sell it tomorrow, that’s called BTST. Remeber you cannot do BTST trades in stock which are in Trade to Trade category. To understand more about stock categories checkout this awesome post by @VM1