Namaste Nabin and welcome to the UTM Community!
I see that you also posted a similar question in the XG Community - is one or are both firewalls XG?
In any case, both models automatically create routing based on the VPN configuration. Please modify your diagram to include IPs/subnets and tell us which subnets should be able to communicate with each other. Also, confirm that local networks at both sites should reach the Internet without going through the VPN tunnel.
Cheers - Bob