Hi there, @Tural_Aliyev 
Unfortunately, it’s impossible to change the size of the pagination bullets. I am really sorry!
However, I totally get your idea and I’ve added it to the Wishlist on your behalf - Change size of pagination bullets. If more users support this request, we might consider it in the future.
The good news is that it possible to change the color of active/inactive bullets using the CSS code below 
.es-bullets-control-item {
background: #D1D5DB;
}
.es-bullets-control-item-active {
background: #B81A1A;
}