There are no personal exemptions since the tax laws changed for 2018 and beyond.
The standard deductions for 2020 are as follows:
2020 Standard Deduction Amounts
Single $12,400 (+ $1650 65 or older)
Married Filing Separate $12,400 (+ $1300 if 65 or older)
Married Filing Jointly $24,800 (+ $1300 for each spouse 65 or older)
Head of Household $18,650 (+ $1650 for 65 or older)
(Add $1300 for legally blind)
The age for the deduction is based on your age at the end of 2020.