Apple can easily break the $150 threshold this year. Some analysts have the company breaking $200 in 2018, lead by the iPhone 8 and services revenue.
If the Trump administration is able to get Apple to repatriate its overseas money this year, it could break $200 this year.
Dividend payouts aren't bad either, just make sure you put them into a DRIP!
How much per-share value do you think a tax holiday (on as-yet unremitted foreign earnings) would reasonably represent? Let's say the the rate was 10% on all as-yet unremitted foreign earnings (with no foreign taxes paid credit) and that Apple (re)patriated meaningfully all of its as-yet unremitted foreign earnings. Or even if the rate was 5%, what per-share value do you see that representing for Apple?
It would certainly matter, but I don't think it would justify a large share price increase - nothing like $20 or $40 per share. On the other hand, a significant decrease in the (U.S.) corporate tax rate - to, say, 15 or 20% - would represent a pretty significant increase in Apple's future earnings potential and thus might justify a a substantial increase in its stock price.