Scout doesn't think her father can "do" anything besides be a lawyer - he doesn't do hands-on physical work and he doesn't play football. He's much older than the parents of her peers, which makes it difficult for him to take part in such activities. In addition, Atticus wears glasses because he's nearly blind in one eye. Instead of hunting, he sits and reads inside. Scout is slightly ashamed of her father, because it seems like he can't do anything noteworthy. They see their father through the lens of childish stereotypes. They have been intrenched by gender roles since they were babies. With more maturity, they will see how special their father really is.
"Atticus was feeble: he was nearly fifty. When Jem and I asked him
why he was so old, he said he got started late, which we felt
reflected upon his abilities and manliness." (ch 10)