Site with 5k unique visitors a day. How much could ads help?

First off, sorry if this is in the wrong section. Never really know where to post certain questions correctly in BHW.

I have a site that gets about 5k unique visitors per day. Theres no advertisements on it, but if I did put ads on it, how much could I make on it? Whats the best advertising I should look into for this? Let me know, thanks!

Impossible to say whats best without knowing your niche, the quality of content you have, and your traffic sources (organic search, social media, etc...).