Usually it's roughly cost of flight -10% x 5.

So a 500 dollar fare might have 50 in taxes, so 450 x 5 = 2250 points.

Your silver 25% bonus does not count towards status- though the current west cost+ promo points (double or triple) do.

Don't forget if you get their Visa you only need 3000 to qualify, and might be able to get them to match you gold for 8000 or so in spending with the Visa.