I pleaded one side of my brakes on the car and I checked two days later and my brakes go all the way down to the floor so am I posed to do both sides or

Yep, bleed all four, since you did only one side and not the other and tried brakes out bleed all four, not just the other side, and if that does not do it see if there are any leaks, if not your master cylinder may be bad.

Bleed brakes in a certain order starting with the wheel that is furthest from the master cylinder. Order for your vehicle is passenger rear, driver rear, passenger front and driver front.

Yes bleed all four. How old is all your brake fluid, whats it look like? It should be nice and clear. Brake fluid breaks down by air and contain moisture over time. Moisture will not compress like hydraulic fluid. If its dark at all, It should all be replaced. You can perform a brake flush and refill of the entire system easily during the bleeding process. Just be mindful not to let the master cylinder run dry.