The account Artscore defines the quality level of an artist on Art Limited, with a base representation of 100. The account score is calculated from all the visible 20 artworks uploaded in the last 24 months and already published in the common feed, completed with other specific account parameters calculation like consistency quality, engagement, selections count, points from different feeds and/or members, etc. Each image gets also its own Artscore, but with a different algorithm. The average of the whole image scores is not the account Artscore.
If you feel your Artscore is too low, you can delete the artworks that didn't obtain enough good results and keep your best ones. Only visible creations in the common feed are used in the calculation. Details