i just need about a liter to finish one wall in my house can i get it

Do you still need to use a primer on drywall before you use this paint?

I dont find anywhere on the specification as to how many liters does it come in one container. Nor does it say anything about coverage area.

Our basement floor (very old) lino tiles were previously painted over -- around 15 years ago, and we're thinking of doing it again -- though also wrestling with just adding cork or laminate. However, if we do paint over, we're wondering if this sort of combo-interior paint would work over older floor tiles.