SHOP APP / try to Add stock and size available

iam creating a clothing shop app and i would like to know if i can add on my products page a selector to choose quantity i want buy and another one to choose the size available.
I understood i can do a lookup with zapier to see rows in different columns (will be my stock and categorie size for each products) but i dont know how to make it on glide. which module i can use…
If someone already done this and can help me.
Thank a lot

For the size available, you can use the solution here.