Ahead of Alphabet (GOOGL) earnings, Wedbush's Scott Devitt says he's looking for Search and YouTube business to be up 9%, but Scott says the most important narrative will be around A.I. "Query volume growth" will be a focal point to show search patterns and the real impact of A.I. on its search business. For YouTube, he says the site is gaining against competitors in "time spent" by its users and believes the monetization story is yet to be told.