My 2013 Ford F150 with the eco-boost six speed transmission a code of 2704. If I change the transmission fluid could possibly fix the problem

Have a look here: https://repairpal.com/obd-ii-code-p2704-transmission-friction-element-e-apply-time-range-performance My guess is that you will not have much success by changing the transmission fluid. But, it's a harmless first step at nominal cost, so why not do it?