What are the benifits of having reseidence card?

As I am new to this place and don’t know much about the rules and regulations. But as I had been to different nations before we used to have the resedencs card with us. It had been more then a month I had been here on working visa and all the procedures for the card had been done and yet hadn’t received the card. And also the next thing I was quirous about is it possible if someone from Romania wants to take me abroad to the other country is it possible. If it’s possible then what would the procedures and timing for it.
I would be very great full if this forum of expert group would help me out in this matter.
Thanks in advance :) ya all have good day

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