My sister was on my scratch account and favorited a bunch of things that I don't like. Also she liked them.How do I delete favorites ands likes???

Just go to the project, and click the star and heart button (the same way you like/favorite them). This will undo it.

OwlEye wrote:

My sister was on my scratch account and favorited a bunch of things that I don't like. Also she liked them.How do I delete favorites ands likes???

Click on the favorite and the love it button to undo it. And if you don't want your sister to do that, don't let her go on your account. But you could let her have her own account though.