How to speed getting data from Google sheets

Hello ..

My app screen shows a dvl .. when a user click the item the app must fill data from the same source to labels “it’s the item clicked data”.

At the first.. i tried to use “get value from” but its very very slow.. so .. I’m trying to do an alternative solution, but it returns “null” value .. it’s the point i need the help.

Here’s my blocks, and waiting for your help.

Thanks