Small office: repaint walls + tidy up scuffs

I run a little beauty room at home and the walls are looking tired where clients’ bags keep scuffing them. It’s one room about 2.8m x 3.2m, paint is currently a pale greige, would like it freshened up in a similar colour (I can supply Dulux vinyl matt if you tell me how many litres). There’s a couple of nail holes to fill and one corner that’s been knocked by a chair. Hoping to get it done before the bank holiday rush.