@donex74969 you are not giving us a whole lot o information here. From teh little bit that you are saying, it does sound like a bad touchscreen. It is part of our display assembly and needs to be replaced as one. Since iFixit does not yet have a specific guide for this, use something like [https://www.youtube.com/watch?v=vRbOHsQBeFg|this video]. Replacement screens are readily available at many online stores.
While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.
Repair is War on Entropy!