electing points on cloud

Hello everyone!

I'm having a little question when selecting my point cloud which maybe there is an quickly answer

I'm selecting my point cloud at the scale 1:2000 and I'm getting 1542 points. When I select the same cloud at the scale ou 1:300 I get 5862 points.

Does anyone know how can I turn this option off and get all my points in any scale? Is this possible?