Hello,
With some custom CSS, you could achieve that, just like in our catalog of books example table.

You would need to add some conditional formatting to the "stars" column:

Each content (<span class) has these in order:

<span class="stars-container stars-96">★★★★★</span>
<span class="stars-container stars-90">★★★★★</span>
<span class="stars-container stars-85">★★★★★</span>
<span class="stars-container stars-80">★★★★★</span>
<span class="stars-container stars-70">★★★★★</span>
<span class="stars-container stars-60">★★★★★</span

Of course, you will set those conditions in Conditional formatting for your needs.

And the classes are defined in wpDataTables settings/Custom JS and CSS/Custom CSS field, like:

.stars-container{
font-size:20px !important;
}
.stars-container { position: relative; display: inline-block; color: transparent; font-size: 50px;
line-height:normal;
}
.stars-container::before{ position: absolute; top: 0; left: 0; content: '★★★★★'; color:lightgray;
}
.stars-container::after { position: absolute; top: 0; left: 0; content: '★★★★★'; color: gold; overflow: hidden;
}
.stars-0::after { width: 0%; }
.stars-10::after { width: 10%; }
.stars-20::after { width: 20%; }
.stars-30::after { width: 30%; }
.stars-40::after { width: 40%; }
.stars-50::after { width: 50%; }
.stars-60::after { width: 60%; }
.stars-70::after { width: 70%; }
.stars-80::after { width: 80%; }
.stars-85::after { width: 85%; }
.stars-90::after { width: 90%; }
.stars-96::after { width: 96%; }
.stars-100::after { width: 100%; }

I hope that helps.