$540 via promo credit when you add a new smartphone line with your own 4G/5G smartphone on postpaid Unlimited Plus plan between 5/18/23 - 5/31/23 & port-in req'd. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
Not unless you have a contract for it (typically that would mean your home phone service is part of some combined package with TV, Internet or Mobile phone service).
If your home phone is the only service you get from Verizon, there is unlikely to be any termination fee. If it is covered by a contract, you would have to read the contract language to see what, if any, fees applied.