First of all not sufficient Data is given you should include the Work you’ve tried from your Side.

I Searched and found a code but you need timeGridPlugin from fullcalendar/timegrid library and check the below code I’m new to react dev so,
check if you can modify code anywhere

Code:

import { Calendar } from '@fullcalendar/core';
import timeGridPlugin from '@fullcalendar/timegrid';

const MyCalendar = () => (
  <div>
    <FullCalendar
      plugins={[timeGridPlugin]}
      views={["timeGridWeek"]} // this line adjusts calendar to only week View 
    />
  </div>
);

I saw that Fullcalendar allows for a “headerToolbar” field, in which “timeGridWeek” can be set in order that it is the only available view. That fused with the other answers here gives this:

<FullCalendar
  initialView={timeGridWeek}
  headerToolbar={
    center: "timeGridWeek",
  }
  plugins={[timeGridPlugin]}
/>