Now the surveys are mostly sent to the customers on their phone if they use the app or something like that. In the past you went to a website printed on the receipt to do the surveys. That might still exist, I'm not sure, but the vast majority of surveys are done on a smart phone.
In the past, when customers had to go to a website and do a lengthy survey, very few would actually do it on their own, and then usually only if they were mad. So if you kept a few receipts and do them yourself and make a big impact, but that's not going to do much now if it even works at all.
To get a good score (and mine is), don't ignore customers, react to lines, be nice, take care of customers etc, basically provide good service. Under the old system you pretty much had to do your own surveys or talk the customers who like you into doing them, so a few "fans" have an outsized impact. My scores were **** then because I didn't do either.