We are all other users here, so we do not know if Apple can assist, but:
Take a look at the terms towards the bottom of this page:
https://www.apple.com/shop/buy-ipad/ipad-pro/12.9-inch-display-2tb-silver-wifi-cellular
copied here:
Verizon Special Offer: Get a $200 Gift Card. Offer through September 25th, 2021. Activate your own Cellular iPad online at Verizon.com.Requires new postpaid tablet line. Select any Verizon consumer postpaid
data plan. How to Redeem: Submit promotional application through http://www.vzw.com/myverizon within 30 days of activation. Apple may provide certain information about your device and purchase to Verizon to facilitate and verify your eligibility for this Special Offer. Receive a $200 Verizon e-Gift Card when you activate an iPad purchased from Apple Retail or Apple.com on any Verizon consumer postpaid plan. Redeem via your Notifications on the
My Verizon app or vzw.com/myverizon.
Customer must submit for redemption within 30 days of activation, and device must remain activated for 45 consecutive days. May not be combined with other promotional offers. We reserve the right to charge the amount of the Verizon e-Gift Card to your Verizon Wireless account if service is canceled within 12 months or change your price plan from an eligible plan. Your Verizon e-Gift Card will be sent via email within 8 weeks after receipt of claim to the submitted email address. This gift card can be used to buy merchandise & services at stores/kiosks operated by Verizon or at verizon.com.
Gift cards cannot be used at Verizon Authorized Retailer locations.
Gift cards can be used to pay a Verizon Wireless or Fios bill by
visiting Verizon.com
or using the My Verizon app (wireless bills only) or My Fios app. Do
not mail printed copy of digital gift card with your bill. For card
balance call 1.800.876.4141 or dial #GIFT (#4438) from your wireless
device. Gift cards are non-refundable and cannot be returned for a cash
refund, except in those states as required by law. Use of gift card
constitutes acceptance of all terms & conditions. Treat this card
like cash, neither Verizon nor Apple is responsible for gift cards that
have been lost, stolen, or damaged. Gift cards do not expire and are not
subject to dormancy or other fees. Gift cards may not be used for
resale, advertising, marketing, sweepstakes or other promotional
purposes without consent. Offer not available to Visible customers.
Looks like you need to buy it from Apple and then get a plan from Verizon.