Hi good day im working in uae now and my boss...

The worker is entitled to receive an end-of-service bonus, which is calculated at the rate of 21 days' salary for each year of the first five years
30 days' salary for each year is more than that.
You can review the employment contract to make sure of the end date of this contract
Here is the text of the UAE labor law, related to your inquiry:
Article (132):
A worker who has completed one or more years of continuous service shall be entitled to severance pay at the end of his employment. The days of absence from work without pay shall not be included in calculating the period of service. The severance pay shall be calculated as follows: 1. 21 days' wage for each of the first five years of service. 2. 30 days’ wage for each additional year of service provided always that the aggregate amount of severance pay should not exceed two year's wage.
Article (133):
A worker shall be entitled to severance pay for any fraction of a year he actually served, provided that he has completed one year of continuous service.
Article (134):
Without prejudice to the provisions of laws that grant pensions or retirement benefits to employees in certain firms, severance pay shall be calculated on the basis of the wage last due for monthly, weekly and daily paid workers, and on the basis of the average daily wage Referred to in Article 57 here of for those paid on piecemeal. The wage used as a basis for calculating severance pay shall not include whatever is given to the worker in kind, housing allowance, transport allowance, travel allowance, overtime pay, representation allowance, cashier's allowances, children education allowance, allowances for recreational and social facilities , and any other bonuses or allowances.