If you want to check the value of any bitcoin wallet address, nothing simpler, all you need is a bitcoin wallet address (or public key) and internet access (you don't need to be connected to a blockchain).
The entire operation does not require any technical knowledge and takes literally a moment. Everything you need to do is described below in 3 steps:
Step 1) Copy the address of the bitcoin wallet whose status you want to check (you can also rewrite it, but it's probably less convenient than copying).
Step 2) Go to one of the following pages: