Hello Saheed Adisa,
Thank you for the post, you can refer the below link for deploying WAF on VMware platform,
https://docs.imperva.com/bundle/v15.3-waf-vmware-installation-guide/page/57589.htm
For importing the license, you can self generate the license from the below portal,
https://www.imperva.com/ld/das_key_gen.asp
You can also contact support for the license file.
------------------------------
Syed Noor Fazal
Product Support Engineer
------------------------------