is it worth it? any info on this if bonus comes i right away?
From the Terms and Conditions
Posting of Promotional Miles:
At the conclusion of the promotion, all miles earned by each member from Qualifying Activity will be multiplied by 30% to determine the eligible bonus up to a maximum of 25,000 Bonus Miles. Bonus Miles will be credited into the member's account on or before January 30, 2020. The maximum bonus miles that can be earned by a member under this promotion is 25,000. MileagePlus will not be responsible for technical problems with partner miles postings, or failures or delays in miles postings by hotel partners, that would render any points to miles converted as ineligible under this promotion.