All income from all sources that you received money from in 2017 is reported on one tax return. You will enter all W-2's for 2017 on one return. Enter them one at a time. Under no circumstances will you add W-2's together. Each one has to be entered individually on one single tax return.
If does not matter if the W-2 reports only one penny of income paid to you. You are required to report it.