宜しく: (polite, formal) well, acceptably

宜しく: pleased to meet you; best regards

pleased to meet you / best regards / thanks in advance / thanks for your continued support

(polite, formal) well, acceptably

please think well of me, please take care of me (a newstarter after an introduction) / please take care (of) (when entrusting a person or piece of property to someone)

nice to meet you, best regards / please take care of (me, or other subject matter). A phrase used when asking someone a favor.