Hi Richa,
Provide a few documentation and hope it helps.
VPC Configuration Guide for 5.x
https://www.cisco.com/c/en/us/td/docs/dcn/aci/apic/5x/layer-2-configuration/cisco-apic-layer-2-networking-configuration-guide-52x/access-interfaces-52x.html
Introduction on vpc policy design options.
https://unofficialaciguide.com/2018/04/10/aci-vpc-in-aci/
If you have faced an issue after configuring, please check this guide for troubleshooting.
https://www.cisco.com/c/en/us/support/docs/cloud-systems-management/application-policy-infrastructure-controller-apic/218374-troubleshoot-virtual-port-channel-vpc.html
Cisco Live Lab for Vpc Policy Group Configuration
https://aci-lab.ciscolive.com/lab/pod9/accesspol/vpcpolgrp
Best Regards
Lucy
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