Ok it is a little confusing on how to do this let me show how with pictures there are 2 settings that adjust the onscreen interface:
1. The ui scale slider -controls the size of the interface itself and requires the box next to low to be checked off in order for the changes to remain.
2. The Render Scale - Controls the size of what’s being displayed inside the interface.
(Sorry, the forum doesn’t allow me to post links)
The U/I slider:
https ://i . imgur . com/VQUIhV8.jpg
The render scale:
https ://i . imgur . com/QVEGwti.jpg