Apple TV remote does not charge

the remote will not charge.

How do you know? The remote is not supposed to show that it is charging. You can view the battery charge levels on the paired Apple TV, through Settings screen, including while charging. See: Check the battery level of the Siri Remote - Apple Support

If your Apple TV is not responding to the remote, then that may have a different cause. Then try pairing again.

the remote will not charge.

Verify that you charged as suggested to do:

- to a computer USB port

- or to a power adapter in an AC socket.

Charge the Siri Remote (3rd generation) USB-C - Apple Support

If that didn't bring a solution, then contact Apple Support for assistance, possibly as a warranty situation.

when the remote is charging, the light on the top should be on correct?

No, it does not. There are no indicators on the remote itself to show that it is changing. Instead, look up the charge status/​battery level in Settings on Apple TV.

could be 

dirt or lint in the ios devices port when that happen to me I clear it out with a match or toothpick

a defect cable, testing with another cable could show if it is so

a defect port in the ios device

when the remote is charging, the light on the top should be on correct?