Drooping neck fat and pronounced neck wrinkle. Kybella or neck lipo? Botox for wrinkle? (Photos)

My personal preference in your case would be to go with Kybella, simply because you do have some drooping skin. CoolSculpting and face lipo with small cannulas would both do an excellent job of removing the fat. And it’s possible that your skin would adjust to the loss of volume, or could be tightened with Ultherapy.
The advantage with Kybella is that the deoxycholic acid actually causes some skin contraction, so you may not need anything other than the Kybella to get a sleeker jawline. As for the neck wrinkle, Botox may help a bit, but sometimes a non ablative fractionated laser works best. Consulting a board-certified dermatologist will help you decide how to remove your double chin; you have a lot of excellent options. 

"Injecting soft fillers like Belotero in this area can reduce lines, wrinkles and folds as well as improve skin texture with long-term collagen production. Fillers are being used more frequently to contour and lift rather than solely line fill. Of course, fillers are best used in combination with lasers and microneedling​ with PRP to get the optimal outcome.

I suggest getting a formal evaluation with a cosmetic dermatologist to create an individualized treatment plan that works for you. Best, Dr. Emer"

Hi and thank you for your question! Based on the picture, I think you are a good candidate for non-surgical treatments. You can see very good results with Kybella for the fat under the chin. We can also use some filler treatment to create a sharper chin angle. For your neck area, you can try radiofrequency treatment to tighten the skin. We can also use superficial fillers such as Belotero to treat the lines on neck. Botox can also be used for neck, but it's mostly for vertical lines (platysmal band). Please consult an experienced cosmetic doctor for best results. I hope it helps and good luck!