I have 23andme text files and would like to convert to SAM/BAM format I would like to convert 23andme text file to NextGen to BAM file for Yfull.com to read.  It is difficult to get answers on how to convert to SAM/BAM file for the 23andme text file to be converted to SAM/BAM tools
Having done 23andme myself I can tell you that your variant file, which contains SNP genotypes, cannot be converted to a bam file. It does not contain the same information as a bam file. It may be helpful to familiarize yourself with those filetypes and the technologies used to obtain them. A SAM/BAM file contains alignments of reads obtained by sequencing. Your standard* 23andme analysis doesn't have reads, as it uses a SNP array for determining the alleles at predefined positions. Markers which are not included in your 23andme file cannot be added by other means because those were not genotyped by the array. Therefore also Y-DNA cannot use your 23andme file or add additional markers.

*For the sake of completeness: I am aware that under rare circumstances 23andme can perform WGS for additional variant typing, but I do not assume this is the case for OP.