how block app installation for Standard users?

You would need to create profiles using some mobile device management system.

MDM restrictions for Mac computers - Apple Support

pedrambk wrote:

Hello,

i am Admin support for a small company and i the admin for all of our Macs.

i need to give users normal access and block them from installing apps,

how can i block a standard user from installing app?

https://support.apple.com/guide/mdm/managing-software-updates-mdm02df57e2a/1/web/1.0

pedrambk wrote:

we have MDM Intune. but i was hoping to not supervise the computers, i just need them to not install apps, thats all

Thanks :)

That sounds like "supervising the computers" if you want to restrict their use.