One conflict that seems to be resolved by the end of To Kill a Mockingbird is the battle between Scout and her Aunt Alexandra over the necessity of behaving more like a lady. Alexandra has made it clear that she thinks Atticus has been deficient in this respect of his parental upbringing, and Alexandra tries to force her ways of "gentle breeding" upon Scout. Scout begrudgingly wears her Sunday best at the Missionary Circle tea, and she endures Miss Stephanie's jokes about her dress and the whereabouts of her overalls. By the end of this chapter, Scout seems to understand that there are times when it is important to act like a lady.
After all, if Aunty could act like a lady at a time like this, so could I.
Alexandra seems to have given up this prospect after the attack by Bob Ewell, conceding to Scout's wishes by bringing her overalls--"the garments she most despised"--for her to put on in a conciliatory offering between the two strong-willed Finch ladies.
Another conflict that is resolved in the final chapters is what to do about Boo. It is obvious that Boo killed Bob, but Sheriff Tate realizes that bringing Boo "into the limelight" of negative publicity and a possible trial would only cause him distress and make Bob's death seem like a tragedy. Sheriff Tate's decision to call Bob's death accidental and self-inflicted saves Boo from publicly appearing to testify--and preserves his privacy; and the news of Bob's death is allowed to fade away quickly--a deserved fate for a man who only represented hate and ignorance in Maycomb.
Some conflicts would be:
Racism in Maycomb
childhood innocence exposed to the evils of the world
Tom Robinson trial
there are plently of others in the book, but if you still can't identify them, try