well now there is only like 10 to 15 eggs and they like white so if I am not mistaking it means they won't hatch right?Well it may or may not hatch. Colouration of the eggs will suggest if they are fertile or not!
I would also suggest documenting this with pics, it would ve incredibly informative to the fishlore community.
how long should it take for the eggs to hatch? if they are fertile of course?Yeah, I'm bot expert on some of the american cichlids (like firemouths) but I believe fertilized eggs are normally cream or orange coloured.