I can not find my WIFI Name

> Model: C6300|AC1750 Cable Modem Router Docsis 3.0

   C6300[v1] or C6300v2?  Look for "Model" on the product label.

> I can not find my wifi network [...]

   Which one?  A C6300[vX] is a dual-band router, so it could have two
SSIDs.

> [...] when trying to conect my tv to the wifi.

   "my tv" is not a very detailed description of anything.

   Do other wireless devices work as expected with your C6300[vX]?  Does
your (unspecified) "my tv" find other wireless-network signals?

   Visit http://netgear.com/support , put in your (actual) model number,
and look for Documentation.  Get the User Manual (at least).  Read.
Look for the LED descriptions and "Troubleshoot".  Pay particular
attention to the "WiFi On/Off button".  Did you press it?  Further
reading might not hurt, either.