As you can guess from its name, Quora profile followers are the ones that follow your profile. There are several positive effects to have a good number of profile followers, and these are:

Building trust,

Increasing visibility,

Increasing engagement.

Like on all social platforms, people tend to take profiles with many followers seriously. This is not so different for Quora users as well. People think that if so many people follow an account, then it means that the account is something worth following, and its opinions should be important. In short, it makes your profile look more trustworthy.