I will leave aside the question of how to value a share. A share trading at US cents is not necessarily cheap. It may go down rather than up. Thus you have not defined the word "cheap" in a meaningful economic or market sense.
Leaving that question aside you now want to turn your attention to the Quantopian Pipeline. You can use it to search for US listed stocks trading at 15 cents or less.
Having found such stocks you can then instruct your algorithm to buy them. In such quantity as you may determine.
Your algorithm should then contain rules for when to sell the stock.
There are many sample algos on this forum. You should pick bits out of them to craft your own purpose built algo.