Hey @denisesabry !
Were you wanting to learn how to update the inventory for a product in your store? If so, you can view product inventory on the Products page, which displays a combined inventory count for all of the variants of each product.
The way that you update the quantity for a single product depends on whether the product has variants. For step by step instructions, please read this guide below:
Let me know if this is what you were referring to!