Will I need to import places,challenges,level from Hitman 2 for steam?

So Hitman 3 is exclusive to epic games I need to wait 1 year because Hitman 3 expensive in my country.

Is there anything I need to know?

Nothing at this point.
If you are planning to gather all games on Steam, and don’t care about Epic, you’ll need to wait I guess till December-January for any possible news regarding Steam.
No Steam mentionings from IOI till the exclusivity deal expires, I suppose