here could be several reasons why your kitchen tap is not working. Here are a few things you can try to troubleshoot the issue:

  1. Check if the tap handle is fully open.
  2. Check if the water supply to the tap is turned on. This may be located under the sink or behind the tap itself.
  3. Check if the tap aerator (the small screen at the end of the spout) is clogged. Remove and clean the aerator if necessary.
  4. Check if the hose or the pipe under the sink is kinked or clogged.
  5. If the tap is a single handle design, check if the cartridge (the internal valve) is damaged or worn out.
  6. If the tap is a two-handle design, check if the valve seats (the parts that the handles press against to control the flow of water) are damaged or worn out.

If none of these steps help, the problem may be with the tap itself or the plumbing system. In that case, it may be best to call a professional plumber to diagnose and fix the issue.