Who I have the same questioned this topic

I helped a friend activate eSIM with Verizon Wireless so I thought I'd make a post to help others out and possibly clear up any confusion. His example was combining 2 numbers into 1 phone. This is also the process if you want to change from a physical SIM to an eSIM to free up your physical SIM slot to be used with an international carrier, etc.

• Verizon Wireless began supporting eSIM activations around iOS 12.1.1 rollout early December
• To change from physical SIM to eSIM simply contact Verizon Wireless via call or chat
• Let the representative know you want to perform a change from physical to eSIM
  • Provide rep with Digital SIM IMEI via Settings > General > About
    • Note: must use Digital SIM IMEI (exactly how it is labeled in the iPhone)
  • At this point Verizon Wireless' system will generate an electronic ICCID (SIM number)
  • Verizon Wireless will then request an email address to send a QR code to
    • You MUST scan the QR code to finalize the change. e.g. use your iPhone to scan the code via your email on a computer or tablet
  • To scan the QR code, on your iPhone go to Settings > Cellular > Add Cellular Plan
    • Once the QR code is scanned, the change will complete
• If your not a Verizon Wireless user and want to activate a line of service on eSIM you can do so by downloading My Verizon app (so I'm told)
  • Follow the instructions there to process your own activation

• Dual SIM with an eSIM FAQs | Verizon Wireless
  • Note #5 speaks to combining two phone numbers into a single Dual SIM device including if one line is on a business account
• Dual SIM with an eSIM Support Overview | Verizon Wireless

Good luck.