welcome to knitting!
This is a little too little information, to be of help, I guess.
What are you using? knit stitches only or knit and purl? That would be a valuable information. One row knit, next row purl and so on creates stochinette and that does curl. You can like it or not for a scarf.
Can you snap a photo of the object and post it? We do not want to hold a photocontest, so just snap it with whatever comes your way