yes it depends mostly on the directories you select and the ones that accept you but I've tried with one of my startup and I gained around 100 backlinks in a we

yes it depends mostly on the directories you select and the ones that accept you but I've tried with one of my startup and I gained around 100 backlinks in a week. In term of Domain authority, I was starting from very low but I also saw some changes even it takes a few weeks to being updated.