$500 via Verizon e-gift card (sent w/in 8 wks). Activation of 4G LTE/5G phone on 5G Get More plan req’d. Device must remain active for 45 days. $500 charge back if service cancelled w/in 12 mos or eligibility req’s are no longer met. See vzw.com/bring-your-own-device for details.
Verizon announced several years ago that they would not be rolling out FiOS to any new areas. Something to do with ROI, I suspect. Spend some time with Google and you'll find lots of articles about this.
If you happen to live on the line between FiOS and non-FiOS areas I can understand why it's frustrating. Unfortunately, Verizon drew the line somewhere and they aren't going to change it.
If you really want FiOS, the only immediate action you can take is to move to an area that has it.