Does one get more RCs after your 50 RCs of Daily target are over??

hein?

you mean the practice questions. and i don't think so. go to the "resources" section and go to questions.
[Resources -> Questions]
there are a lot of websites offering free practice questions listed there, like cracku, mbahitbullseye, 2iim, etc.

You can practise VARC on YT by using iquanta's playlist by Shabana ma'am

u can practice more timed RCs at catmock.com