Are there any grocery stores near this resort . Staying in time share and looking to get food to cook at the resort
I'm assuming you are staying in Ko Olina and looking for food stores in Kapolei or Ko Olina proper. Having a car helps although there are shuttles. Within Ko Olina is there an ABC Country Market that can provide some fresh foods and groceries but it's pricey. Cheaper than eating restaurants but still pricey. Having a car you can go into Kapolei (or take a shuttle for about $25) and there is Safeway, Costco, Target that all have groceries. We mostly hit Costco but there are choices.
With Foodland being the more "local" and typically a bit lower-priced than Safeway.
However, whichever one you may patronize, make sure to sign up and get their membership card (a very simple thing to do) so you can take advantage of all the on-sale items.
Most resident families eat whatever is on sale that week.
I second Amberloo's recommendation towards Foodland. I shop there each time I stay in Ko'olina. Their selection of poke alone is worth the trip! You use your phone number to sign up for their store membership. It usually saves me significant money.