<style>
   .box_navbar_collapse{
     display: flex;
     align-items: center;
     justify-content:space-between;
   }
.navbar-nav{
   display: flex;
  align-items: center;
  list-style: none;
   flex:1;
}
.navbar-nav >li{
  margin:0 10px;
}
.box_tell>p{
  margin:5px 0;
}
.text-center{
  text-align:center;
}
.box_tell{
 margin-left:20px;
}</style>
    <div class="box_navbar_collapse">
      <a class="navbar-brand" href="#">
        <img src="img/index/logo.png" alt="">
      </a>
      <ul class="nav navbar-nav">
        <li>
            <a href="#">text</a>
         </li>
          <li>
            <a href="#">text</a>
         </li>
          <li>
             <a href="#">text</a>
         </li>
      </ul>
      <button class="btn">кнопка</button>
      <div class="box_tell">
         <p>(097) 948-61-83</p>
         <p>(095) 836-90-32</p>
      </div>
   </div>