I believe Trump and Joe Biden do have a contest here but we should not just ignored the other candidates , it is not only fair but also disrespectful for them since I do believe that those candidates are way more suited for this job as compared to a orange racist and a corrupt leader.

According to the google , there are around 1214 people who are standing for the elections.
https://www.bbc.co.uk/news/amp/election-us-2020-54334173

The list is endless. But I wanted to ask one question here : Why did people never choose a woman ?

The US itself is a narrow minded nation but I think we can make a change. If you see the history of the US presidents it's laughable. People would prefer choosing Trump! Instead of a woman or a qualified man much more capable of handling the politics.

We should gamble on it and at the same time we need to spread the word and try and change the air around the Presidential elections.