Thank you so much for your comments. I got the data for the specific African populations and my data looks like
CHROM POS ID REF ALT QUAL FILTER INFO HG02943 HG03100 NA19023 HG03078 HG03085 HG02464 HG02574
1 4131726 rs3936238 A G 100 PASS AA=A|||;AC=4;AF=0.409345;AFR_AF=0.3343;AMR_AF=0.4308;AN=14;DP=23035;EAS_AF=0.3294;EUR_AF=0.5497;NS=2504;SAS_AF=0.4335;VT=SNP 0|0 0|0 1|1 0|0 0|1 0|0 1|0
NS=2504 shows the sample number, how can I get the data for all these individuals.