A code snippet showing what your table looks like and how you are trying to set to value would be very helpful.

It should be enough to catch datepicker input and set its value.

<div class="form-outline datepicker">
  <input
    type="text"
    class="form-control"
    id="exampleDatepicker1"
  />
  <label for="exampleDatepicker1" class="form-label">Select a date</label>
</div>

document.querySelector('#exampleDatepicker1').value = '18/08/2022';

Of course, when setting value you must take into account the date format which is set to dd/mm/yyyy by default. If you store the date in a different format, you would have to set the format option in the Datepicker accordingly.