I can't touch on screen, how to fix it?

@kenthcadayona explain this "my lcd screen almost open" a bit better. It is kind of hard to understand what you mean by that. IF your screen is coming out of your phone, then this is most likely caused by an expanding battery. You will need to replace the battery sooner rather than later.

In general if your touch does not work, then the touchscreen, which is part of the complete display assembly has failed. You would need to replace the display assembly to fix this. Since iFixit does not yet have a guide for that, use the one from here It was written in Spanish so use a browser that does the translating for you, if needed.

Here is the guide for the battery just in case that is the issue with the "lcd screen almost open"