Here, you have logged in to Raspberry Pi successfully by using VNC Viewer
If you think resolution ratio is not OK, you can set a proper resolution ratio on set interface of Raspberry Pi.
sudo raspi-config
Select 7 Advanced OptionsA5 Resolutionproper resolution ratio(set by yourself)OK. If it needs restart,
just restart.
In addition, your VNC Viewer window may zoom your Raspberry Pi desktop. You can change it. On your
VNC View control panel, click right key. And select Properties->Options label->Scaling. Then set proper
scaling.