There should not be a problem to create as many VRIDs as you need until their overall number is less than 256 per switch or per IRF stack.
VRID numbers should be unique per L3 interface, so you can re-use the same VRID number under different Vlan-Interface or routed port. For example, this is absolutely valid config:
interface Vlan-interface48
ip address 10.0.48.2 255.255.254.0
vrrp vrid 1 virtual-ip 10.0.48.1
vrrp vrid 1 priority 150
#
interface Vlan-interface50
ip address 10.0.50.2 255.255.254.0
vrrp vrid 1 virtual-ip 10.0.50.1
vrrp vrid 1 priority 150