Which exact model Philips smart TV do you have? What WiFi settings does your TV have? Does your TV show ANY WiFi networks available?
The User Manual I found for the 5000 Series https://www.download.p4c.philips.com/files/6/65pfl5603_f7/65pfl5603_f7_dfu_aen.pdf doesn't show WiFi settings other than the connection options of Easy Connect, Scan or Manual. I assume you have tried SCAN where nothing shows up. What other settings, if any, are there?
New smart phillips tv. I have tried wireless and wired to no avail. Help please
Have you reached out to Phillips Support? It sounds like an issue with the TV. I assume you have at least one other device that uses wifi; does it connect?