How important is the transcript!!!

Please Does a very Good SAT score with Rigorous EC’s as a against a not so good Transcript ruin chances of Admission? Am an International student from Ghana

Depends on other factors such as need for financial aid and where you apply. Basically, if you can pay, then you should be fine. If you need fin aid, then it might be more challenging but if you really mean “rigorous” ECs, then your commitment will still show.