How to fix my phone screen lcd

@itsdanicacay that sounds like a broken display. you will have to replace the display. Since iFixit does not yet have a guide for this, use something like this video to replace the screen.

Replacement screen are readily available at many online places. Pick a seller that appeals to you.

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 the same problem 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!

Yes, it have