I want to know if a person is going to undergo v-lift, filler, and botox, will she acquire/develop certain diseases?

Unlikely: There are no known diseases associated with the procedures you listed.

No: There may be an adverse reaction to the injection or possible bruising or excessive injection or undesireable results or infection but development of "disease" is not considered a general risk of fillers, injections are generally not advised in patients with auto-immune disease but this is not an absolute contra-indication. You should discuss your concern with the injecting physician.

Cosmetic procedures: Having certain cosmetic procedures does not incise your risk of acquiring disease.

not if done by a professional with sterile/hygenic techniques