Can we resit/finish non exam assesments?? To get a higher grade

For GCSEs if you re-sit then you can carry forward the mark you've already got on the NEA and re-sit just the exams but you CAN'T do the opposite - you have to re-submit the NEA and re-sit the exams.

This year your NEA is not being marked as a separate item, it's just that the work you did before schools closed is being used as part of the evidence to decide your grade so you couldn't just work more on that to improve your grade.

what wdym do i have to retake the whole course :/ i do textiles btw so both papers are nea and the exam title i dont think i can do next year since it will be another one ??

In normal circumstances, if you wanted to improve your grade then you would have to re-sit the exam (technically not NEA but an externally set assignment) but you could carry forward the NEA (the portfolio) or not, as you chose. There are no details of how this would work in the Autumn if you want to re-sit - it may be that the variants of GCSE Art aren't available because of the amount of time they would take to do or they may stick with the same exam theme so people don't have to start from scratch.