Bosch installation instructions are usually multi-language. They may appear to be in German, but on closer inspection, you should notice they are written in English below the German instructions.
However, just in case you do have German only installation instructions, you can download the multi-language version by clicking on the link below. These may look to be in German on first glance, but I promise the English version is there as well.
Hopefully, you will now be able to install your dishwasher correctly. If you need further assistance, I'm happy to explain any part of the instructions (in German or English), but you're going to have to explain what "mount it to the kitchen" means. I'm afraid that makes no sense to me at all ;)