Moderator badge will be achieved for being one of the most active members. So contribute, help the community.
SoloLearn will choose moderators monthly and contact them by email (check the email account which is related to your profile).
You will achieve Gold Moderator badge if you are chosen as a moderator for 6 month in a row.
I don't think that this would take an effect. It takes some time e.g. for the spam posts to be deleted. So I think it needs many reports to take an effect. And even creating many accounts (what will be noticed, because of missing xp and using the profiles only to report) will just help until the moderator's tools are available.
B.Naresh kumar Moderators are special member of SoloLearn, Who moderate the community by deleting inappropriate contents, spams etc.