What kind of marks are on your floor that you want to remove?
photos below of floor marks
I've used vinegar and a rag to scrub out scuff marks. You could also try these remedies: https://designingidea.com/remove-scuff-marks-wood-floors/
If they are stains or scratches you might want to peek here for a solution. Hope it helps. http://www.housecleaningcentral.com/en/cleaning-tips/stain-removal/wood-stain-removal.html
You might want to start with a Magic Eraser and see if that does anything. If not, there are repair kits that you can buy at your local home improvement store. And I like to polish using Murphy's Oil Soap.