130K unknown indexed pages?

[AmberJones]

I just bought a new domain and put it on a search console and left it for 2 months but when I came back and checked, lo and behold its got 130k indexed links but not submitted in the sitemap. It even has a few thousand impressions and dozens of clicks to pages that the previous owner made and doesn't exist since I only installed WordPress and 1 page has no post yet. What's next guys?

 

[GenesisOne]

Rebuild the site to gather that traffic and links back and move on from there.

 

[AmberJones]

Rebuild the site to gather that traffic and links back and move on from there.

I'm a bit confused, do you mean I should use these links for traffic? How? Im newbie