A:AnswerThe basic Dell Inspiron 3670 has Integrated Graphics (Intel UHD on chip) - no graphics card. That should be fine for streaming (church) videos.
There is a PCIe slot to add a graphics card. But you need to be careful as to power requirements for the card because of the small power supply. And a higher wattage ATX replacement power supply might not fit in the case.
A:AnswerIt is certainly capable of driving two monitors And it has connections such that you can hook up two monitors.
If both of your monitors are only VGA/DVI then you would need an HDMI/VGA adapter.