Kiss: person, person, light skin tone, medium-light skin tone emoji π§π»ββ€οΈβπβπ§πΌ is part of the People & Body and Family emojis. On some systems it can be accessed by using :kiss_tone1-2:, :couple_kiss_tone1-2:, :couplekiss_tone1-2:, :kiss_person_person_tone1_tone2: or :kiss_person_person_light_skin_tone_medium_light_skin_tone: shortcodes.
It was approved as part of Unicode in 2020 so it should be displayed properly on newer devices.