i want to know if exists some way to show a kit without the required permission, just show it and not redeem,
for example, i got 2 kits configured, normal kit, and vip kit, i want to show both but only kits.vip can redeem the vip kit.
thanks.

It is all in the documentation and configuration,
you dont click on the hide button in the gui and you set a permission for the kits that you want to be redeemable by specific groups, for instance for a VIP kit you would set the permission to /kits.special and would then grant the permission to the vip group with /o.grant group VIP kits.special, everyone can see the kit but only the VIP group can redeem it.