Samsung Galaxy Z Fold7

Verizon states the device will be automatically unlocked with no additional 60-day wait. If you just finished paying off a financing plan early, it should also unlock automatically, though using "non-secure" payments (like a paper check or gift card) can delay the unlock for 35 days for fraud verification.
Prepaid Plan: Even if you own the phone, you must complete 365 days of paid active service before you can request an unlock.