how many beats does a quarter note get with a dot

I copied your question into Google and obtained the following. You could have done the same thing.

"one and a half beats
The quarter note equals one beat. The dot is half the value of the note, which is half of a beat. Add one beat and half of a beat and you get a dotted quarter note that equals one and a half beats!"

A quarter note with a dot is equal to three beats. A regular quarter note is typically worth one beat, and adding a dot to it increases its value by half. So, a dotted quarter note receives one beat for the regular note value plus half of that value, which equals three beats in total.