I'm not sure you can draw too many conclusions in terms of the oil price as much of the swings in the past 4 years has been due to intervention from Trump directly or indirectly. Examples -> Trump made it easier to drill in the US which increases supplies, he also imposed sanctions on Iran and Venezuela which decreases supplies and then turned around and remove sanctions on Iran for certain countries for x amount of time which increased supplied, he talked with the Saudis about oil supplies (how much of an effect he had with them is debatable)...
Biden probably won't be as wishy washy in terms of oil. He has made it clear that he will rejoin the Iranian Nuclear Agreement which should see an increase in supply and he has made it clear that he doesn't like fracking on Federal land and I would assume put more restrictions and regulations on existing US producers which should drive up their cost and reduce the supply. In other words, Biden may be more neutral on oil prices than Trump.