### There are 13. 

[This DnDBeyond search](https://www.dndbeyond.com/spells/class/warlock?filter-search=&filter-damage-type=51&filter-damage-type=58&filter-verbal=&filter-somatic=&filter-material=&filter-concentration=&filter-ritual=&filter-sub-class=) shows several on the Warlock spell list:

* *Create bonfire* (cantrip)
* *Green-flame blade* (cantrip)
* *Hellish rebuke* (1st level)
* *Spirit shroud* (3rd level)
* *Elemental bane* (4th level)
* *Sickening radiance* (4th level)
* *Wall of light* (5th level)
* *Investiture of flame* (6th level)
* *Crown of stars* (7th level)

And on the [Celestial Warlock](https://www.dndbeyond.com/classes/warlock#TheCelestial)'s expanded list:

* *Sacred flame* (cantrip)
* *Guiding bolt* (1st level)
* *Flaming sphere* (2nd level)
* *Wall of fire* (4th level)
* *Flame strike* (5th level)


  [1]: https://i.sstatic.net/NWx7p.jpg